SEC Info℠  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Organovo Holdings, Inc. – ‘10-Q’ for 9/30/13 – ‘EX-101.LAB’

On:  Friday, 11/8/13, at 4:04pm ET   ·   For:  9/30/13   ·   Accession #:  1193125-13-435186   ·   File #:  1-35996

Previous ‘10-Q’:  ‘10-Q’ on 8/9/13 for 6/30/13   ·   Next:  ‘10-Q’ on 2/6/14 for 12/31/13   ·   Latest:  ‘10-Q’ on 2/8/24 for 12/31/23

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

11/08/13  Organovo Holdings, Inc.           10-Q        9/30/13   49:4.3M                                   Donnelley … Solutions/FA

Quarterly Report   —   Form 10-Q   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML    356K 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     24K 
 3: EX-31.2     Certification -- §302 - SOA'02                      HTML     24K 
 4: EX-32.1     Certification -- §906 - SOA'02                      HTML     19K 
48: R1          Document and Entity Information                     HTML     39K 
33: R2          Condensed Consolidated Balance Sheets               HTML    100K 
30: R3          Condensed Consolidated Balance Sheets               HTML     29K 
                (Parenthetical)                                                  
13: R4          Condensed Consolidated Statements of Operations     HTML     84K 
32: R5          Condensed Consolidated Statements of Stockholders'  HTML    128K 
                Equity (Deficit)                                                 
22: R6          Condensed Consolidated Statements of Cash Flows     HTML    123K 
42: R7          Condensed Consolidated Statements of Cash Flows     HTML     39K 
                (Parenthetical)                                                  
23: R8          Change in Fiscal Year End                           HTML     20K 
25: R9          Description of Business and Summary of Significant  HTML     81K 
                Accounting Policies                                              
14: R10         Derivative Liability                                HTML     38K 
24: R11         Stockholders' Equity                                HTML     90K 
41: R12         Commitments and Contingencies                       HTML     41K 
38: R13         Concentrations                                      HTML     23K 
31: R14         Subsequent Events                                   HTML     20K 
45: R15         Description of Business and Summary of Significant  HTML    151K 
                Accounting Policies (Policies)                                   
40: R16         Description of Business and Summary of Significant  HTML     37K 
                Accounting Policies (Tables)                                     
11: R17         Derivative Liability (Tables)                       HTML     29K 
16: R18         Stockholders' Equity (Tables)                       HTML     68K 
44: R19         Commitments and Contingencies (Tables)              HTML     24K 
47: R20         Description of Business and Summary of Significant  HTML     64K 
                Accounting Policies - Additional Information                     
                (Detail)                                                         
49: R21         Description of Business and Summary of Significant  HTML     97K 
                Accounting Policies - Additional Information I                   
                (Detail)                                                         
46: R22         Description of Business and Summary of Significant  HTML     29K 
                Accounting Policies - Estimated Fair Values of                   
                Liabilities Measured on Recurring Basis (Detail)                 
36: R23         Description of Business and Summary of Significant  HTML     34K 
                Accounting Policies - Activity for Liabilities                   
                Measured at Estimated Fair Value Using                           
                Unobservable Inputs (Detail)                                     
15: R24         Derivative Liability - Additional Information       HTML     41K 
                (Detail)                                                         
21: R25         Derivative Liability - Assumptions Used to Value    HTML     32K 
                Derivative Liabilities at Closing Dates of Private               
                Placements (Detail)                                              
18: R26         Stockholders' Equity - Additional Information       HTML    106K 
                (Detail)                                                         
17: R27         Stockholders' Equity - Summary of Company's         HTML     29K 
                Restricted Stock Award Activity (Detail)                         
26: R28         Stockholders' Equity - Additional Information 1     HTML     70K 
                (Detail)                                                         
34: R29         Stockholders' Equity - Summary of Stock Option      HTML     55K 
                Activity (Detail)                                                
39: R30         Stockholders' Equity - Fair Value of Employee       HTML     32K 
                Stock Options (Detail)                                           
20: R31         Stockholders' Equity - Additional Information 2     HTML     96K 
                (Detail)                                                         
27: R32         Stockholders' Equity - Summary of Warrant Activity  HTML     40K 
                (Detail)                                                         
43: R33         Stockholders' Equity - Common Stock Reserved for    HTML     22K 
                Future Issuance (Detail)                                         
19: R34         Commitments and Contingencies - Additional          HTML     27K 
                Information (Detail)                                             
37: R35         Commitments and Contingencies - Future Minimum      HTML     31K 
                Rental Payments Required Under Operating Leases                  
                That Have Initial or Remaining Non-Cancellable                   
                Lease Terms in Excess of One Year (Detail)                       
29: XML         IDEA XML File -- Filing Summary                      XML     82K 
12: EXCEL       IDEA Workbook of Financial Reports                  XLSX    128K 
28: EXCEL       IDEA Workbook of Financial Reports (.xls)            XLS    544K 
 5: EX-101.INS  XBRL Instance -- onvo-20130930                       XML   1.04M 
 7: EX-101.CAL  XBRL Calculations -- onvo-20130930_cal               XML    137K 
 8: EX-101.DEF  XBRL Definitions -- onvo-20130930_def                XML    376K 
 9: EX-101.LAB  XBRL Labels -- onvo-20130930_lab                     XML    995K 
10: EX-101.PRE  XBRL Presentations -- onvo-20130930_pre              XML    663K 
 6: EX-101.SCH  XBRL Schema -- onvo-20130930                         XSD    133K 
35: ZIP         XBRL Zipped Folder -- 0001193125-13-435186-xbrl      Zip    126K

‘EX-101.LAB’   —   XBRL Labels — onvo-20130930_lab

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- RR Donnelley Xcelerate Taxonomy Labels Linkbase, based on XBRL 2.1 http://www.rrdonnelley.com/ -->
<!-- Version: 6.21.0 -->
<!-- Round: 4 -->
<!-- Creation date: 2013-11-08T17:26:50Z -->
<!-- Copyright (c) 2005-2013 R.R. Donnelley & Sons Company All Rights Reserved. -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" roleURI="http://www.xbrl.org/2009/role/negatedLabel"/>
<labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="us-gaap_AccountingPoliciesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xml:lang="en-US" id="id_2591691_928978_1_1"> Accounting Policies [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xml:lang="en-US" id="id_2591691_928978_2_1"> Accounting Policies [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_AccountingPoliciesAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_lbl" xml:lang="en-US" id="id_2591691_931977_1_1"> Accounts Notes Loans And Financing Receivable By Receivable Type [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_lbl" xml:lang="en-US" id="id_2591691_931977_2_1"> Receivable Type [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:to="us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xml:lang="en-US" id="id_2591691_933775_1_1"> Accounts Payable Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xml:lang="en-US" id="id_2591691_933775_2_1"> Accounts payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="us-gaap_AccountsPayableCurrent_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_AccruedInterestAssumedOnAcquisitionMember" xlink:label="onvo_AccruedInterestAssumedOnAcquisitionMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_AccruedInterestAssumedOnAcquisitionMember_lbl" xml:lang="en-US" id="id_2591691_1191776_3_1"> Accrued interest assumed on acquisition. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_AccruedInterestAssumedOnAcquisitionMember_lbl" xml:lang="en-US" id="id_2591691_1191776_1_1"> Accrued Interest Assumed On Acquisition [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_AccruedInterestAssumedOnAcquisitionMember_lbl" xml:lang="en-US" id="id_2591691_1191776_2_1"> Accrued Interest Assumed On Acquisition [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_AccruedInterestAssumedOnAcquisitionMember" xlink:to="onvo_AccruedInterestAssumedOnAcquisitionMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_AccruedInterestOnConvertibleNotes" xlink:label="onvo_AccruedInterestOnConvertibleNotes"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_AccruedInterestOnConvertibleNotes_lbl" xml:lang="en-US" id="id_2591691_1079261_3_1"> Accrued interest on convertible notes. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_AccruedInterestOnConvertibleNotes_lbl" xml:lang="en-US" id="id_2591691_1079261_1_1"> Accrued Interest On Convertible Notes </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_AccruedInterestOnConvertibleNotes_lbl" xml:lang="en-US" id="id_2591691_1079261_2_1"> Accrued interest </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_AccruedInterestOnConvertibleNotes" xlink:to="onvo_AccruedInterestOnConvertibleNotes_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="us-gaap_AccruedLiabilitiesCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_2591691_933113_1_1"> Accrued Liabilities Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_2591691_933113_2_1"> Accrued expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedLiabilitiesCurrent" xlink:to="us-gaap_AccruedLiabilitiesCurrent_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xml:lang="en-US" id="id_2591691_933723_1_1"> Additional Paid In Capital </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xml:lang="en-US" id="id_2591691_933723_2_1"> Additional paid-in capital </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapital" xlink:to="us-gaap_AdditionalPaidInCapital_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="us-gaap_AdditionalPaidInCapitalMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xml:lang="en-US" id="id_2591691_932586_1_1"> Additional Paid In Capital [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xml:lang="en-US" id="id_2591691_932586_2_1"> Additional Paid-in Capital [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapitalMember" xlink:to="us-gaap_AdditionalPaidInCapitalMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_AdjustmentsToAdditionalPaidInCapitalExpenseOnModificationOfWarrant" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalExpenseOnModificationOfWarrant"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalExpenseOnModificationOfWarrant_lbl" xml:lang="en-US" id="id_2591691_1191777_3_1"> Adjustments to additional paid in capital expense on modification of warrant. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalExpenseOnModificationOfWarrant_lbl" xml:lang="en-US" id="id_2591691_1191777_1_1"> Adjustments To Additional Paid In Capital Expense On Modification Of Warrant </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalExpenseOnModificationOfWarrant_lbl" xml:lang="en-US" id="id_2591691_1191777_2_1"> Expense related to modification of warrants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_AdjustmentsToAdditionalPaidInCapitalExpenseOnModificationOfWarrant" xlink:to="onvo_AdjustmentsToAdditionalPaidInCapitalExpenseOnModificationOfWarrant_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_AdjustmentsToAdditionalPaidInCapitalLossOnInducementToExerciseWarrants" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalLossOnInducementToExerciseWarrants"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalLossOnInducementToExerciseWarrants_lbl" xml:lang="en-US" id="id_2591691_1191778_3_1"> Adjustments to additional paid in capital loss on inducement to exercise warrants. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalLossOnInducementToExerciseWarrants_lbl" xml:lang="en-US" id="id_2591691_1191778_1_1"> Adjustments To Additional Paid In Capital Loss On Inducement To Exercise Warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalLossOnInducementToExerciseWarrants_lbl" xml:lang="en-US" id="id_2591691_1191778_2_1"> Loss on inducement to exercise warrants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_AdjustmentsToAdditionalPaidInCapitalLossOnInducementToExerciseWarrants" xlink:to="onvo_AdjustmentsToAdditionalPaidInCapitalLossOnInducementToExerciseWarrants_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xml:lang="en-US" id="id_2591691_935944_1_1"> Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xml:lang="en-US" id="id_2591691_935944_2_1"> Stock-based compensation expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xml:lang="en-US" id="id_2591691_934148_1_1"> Adjustments To Additional Paid In Capital Warrant Issued </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xml:lang="en-US" id="id_2591691_934148_2_1"> Issuance of warrants to consultants/Warrants issued with convertible notes and conversion of notes </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xml:lang="en-US" id="id_2591691_934148_12_1"> Warrants reclassified to additional paid in capital </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityFromExercisesOfWarrants" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityFromExercisesOfWarrants"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityFromExercisesOfWarrants_lbl" xml:lang="en-US" id="id_2591691_1191780_3_1"> Adjustments to additional paid in capital warrant liability from exercises of warrants. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityFromExercisesOfWarrants_lbl" xml:lang="en-US" id="id_2591691_1191780_1_1"> Adjustments To Additional Paid In Capital Warrant Liability From Exercises Of Warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityFromExercisesOfWarrants_lbl" xml:lang="en-US" id="id_2591691_1191780_2_1"> Warrant liability removed due to exercises of warrants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityFromExercisesOfWarrants" xlink:to="onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityFromExercisesOfWarrants_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityReclassifiedToEquity" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityReclassifiedToEquity"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityReclassifiedToEquity_lbl" xml:lang="en-US" id="id_2591691_1191781_3_1"> Adjustments to additional paid in capital warrant liability reclassified to equity. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityReclassifiedToEquity_lbl" xml:lang="en-US" id="id_2591691_1191781_1_1"> Adjustments To Additional Paid In Capital Warrant Liability Reclassified To Equity </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityReclassifiedToEquity_lbl" xml:lang="en-US" id="id_2591691_1191781_2_1"> Warrant liability reclassified to equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityReclassifiedToEquity" xlink:to="onvo_AdjustmentsToAdditionalPaidInCapitalWarrantLiabilityReclassifiedToEquity_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2591691_929248_1_1"> Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2591691_929248_2_1"> Adjustments to reconcile net income (loss) to net cash used in operating activities: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xml:lang="en-US" id="id_2591691_940280_1_1"> Allocated Share Based Compensation Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xml:lang="en-US" id="id_2591691_940280_2_1"> Total employee stock-based compensation recorded as operating expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllocatedShareBasedCompensationExpense" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_AmendmentFlag_lbl" xml:lang="en-US" id="id_2591691_921947_1_1"> Amendment Flag </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_AmendmentFlag_lbl" xml:lang="en-US" id="id_2591691_921947_2_1"> Amendment Flag </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xml:lang="en-US" id="id_2591691_940746_1_1"> Amortization Of Debt Discount Premium </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xml:lang="en-US" id="id_2591691_940746_2_1"> Amortization of debt discount </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfDebtDiscountPremium" xlink:to="us-gaap_AmortizationOfDebtDiscountPremium_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AmortizationOfFinancingCosts" xlink:label="us-gaap_AmortizationOfFinancingCosts"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xml:lang="en-US" id="id_2591691_939963_1_1"> Amortization Of Financing Costs </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xml:lang="en-US" id="id_2591691_939963_2_1"> Amortization of deferred financing costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfFinancingCosts" xlink:to="us-gaap_AmortizationOfFinancingCosts_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_AmountOfWarrantTenderOffer" xlink:label="onvo_AmountOfWarrantTenderOffer"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_AmountOfWarrantTenderOffer_lbl" xml:lang="en-US" id="id_2591691_1191787_3_1"> Amount of warrant tender offer. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_AmountOfWarrantTenderOffer_lbl" xml:lang="en-US" id="id_2591691_1191787_1_1"> Amount Of Warrant Tender Offer </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_AmountOfWarrantTenderOffer_lbl" xml:lang="en-US" id="id_2591691_1191787_2_1"> Warrant proceeds </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_AmountOfWarrantTenderOffer" xlink:to="onvo_AmountOfWarrantTenderOffer_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xml:lang="en-US" id="id_2591691_931668_1_1"> Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xml:lang="en-US" id="id_2591691_931668_2_1"> Total common stock equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US" id="id_2591691_938186_1_1"> Assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US" id="id_2591691_938186_6_1"> Total assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="us-gaap_AssetsAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US" id="id_2591691_928450_1_1"> Assets [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US" id="id_2591691_928450_2_1"> Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="us-gaap_AssetsCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsCurrent_lbl" xml:lang="en-US" id="id_2591691_937150_1_1"> Assets Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_AssetsCurrent_lbl" xml:lang="en-US" id="id_2591691_937150_6_1"> Total current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="us-gaap_AssetsCurrentAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xml:lang="en-US" id="id_2591691_926145_1_1"> Assets Current [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xml:lang="en-US" id="id_2591691_926145_2_1"> Current Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrentAbstract" xlink:to="us-gaap_AssetsCurrentAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="us-gaap_AwardTypeAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AwardTypeAxis_lbl" xml:lang="en-US" id="id_2591691_929038_1_1"> Award Type [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AwardTypeAxis_lbl" xml:lang="en-US" id="id_2591691_929038_2_1"> Award Type [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_AwardTypeAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xml:lang="en-US" id="id_2591691_926379_1_1"> Business Acquisition Acquiree [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xml:lang="en-US" id="id_2591691_926379_2_1"> Business Acquisition, Acquiree [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="us-gaap_BusinessAcquisitionAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xml:lang="en-US" id="id_2591691_928576_1_1"> Business Acquisition [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xml:lang="en-US" id="id_2591691_928576_2_1"> Business Acquisition [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAxis" xlink:to="us-gaap_BusinessAcquisitionAxis_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_BusinessAcquisitionConversionRatio" xlink:label="onvo_BusinessAcquisitionConversionRatio"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_BusinessAcquisitionConversionRatio_lbl" xml:lang="en-US" id="id_2591691_1191789_3_1"> Business acquisition, conversion ratio for common stock, options, warrants and bridge warrants. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_BusinessAcquisitionConversionRatio_lbl" xml:lang="en-US" id="id_2591691_1191789_1_1"> Business Acquisition Conversion Ratio </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_BusinessAcquisitionConversionRatio_lbl" xml:lang="en-US" id="id_2591691_1191789_2_1"> Conversion ratio into common stock on merger </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_BusinessAcquisitionConversionRatio" xlink:to="onvo_BusinessAcquisitionConversionRatio_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationsAndOtherPurchaseOfBusinessTransactionsPolicyTextBlock" xlink:label="us-gaap_BusinessCombinationsAndOtherPurchaseOfBusinessTransactionsPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationsAndOtherPurchaseOfBusinessTransactionsPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_926944_1_1"> Business Combinations And Other Purchase Of Business Transactions Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationsAndOtherPurchaseOfBusinessTransactionsPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_926944_2_1"> Reverse Merger Transaction </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationsAndOtherPurchaseOfBusinessTransactionsPolicyTextBlock" xlink:to="us-gaap_BusinessCombinationsAndOtherPurchaseOfBusinessTransactionsPolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CapitalLeaseObligationsCurrent" xlink:label="us-gaap_CapitalLeaseObligationsCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalLeaseObligationsCurrent_lbl" xml:lang="en-US" id="id_2591691_933138_1_1"> Capital Lease Obligations Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CapitalLeaseObligationsCurrent_lbl" xml:lang="en-US" id="id_2591691_933138_2_1"> Capital lease obligation, current portion </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalLeaseObligationsCurrent" xlink:to="us-gaap_CapitalLeaseObligationsCurrent_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CapitalLeaseObligationsNoncurrent" xlink:label="us-gaap_CapitalLeaseObligationsNoncurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalLeaseObligationsNoncurrent_lbl" xml:lang="en-US" id="id_2591691_934649_1_1"> Capital Lease Obligations Noncurrent </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CapitalLeaseObligationsNoncurrent_lbl" xml:lang="en-US" id="id_2591691_934649_2_1"> Capital lease obligation, net of current portion </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalLeaseObligationsNoncurrent" xlink:to="us-gaap_CapitalLeaseObligationsNoncurrent_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_2591691_938283_1_1"> Cash And Cash Equivalents At Carrying Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_2591691_938283_4_1"> Cash and Cash Equivalents at End of Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_2591691_938283_5_1"> Cash and Cash Equivalents at Beginning of Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_2591691_938283_2_1"> Cash and cash equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_CashAndCashEquivalentsMaturityPeriod" xlink:label="onvo_CashAndCashEquivalentsMaturityPeriod"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_CashAndCashEquivalentsMaturityPeriod_lbl" xml:lang="en-US" id="id_2591691_997663_3_1"> Cash and cash equivalents maturity period. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_CashAndCashEquivalentsMaturityPeriod_lbl" xml:lang="en-US" id="id_2591691_997663_1_1"> Cash And Cash Equivalents Maturity Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_CashAndCashEquivalentsMaturityPeriod_lbl" xml:lang="en-US" id="id_2591691_997663_2_1"> Maturity of highly liquid investment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_CashAndCashEquivalentsMaturityPeriod" xlink:to="onvo_CashAndCashEquivalentsMaturityPeriod_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_2591691_938600_1_1"> Cash And Cash Equivalents Period Increase Decrease </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="id_2591691_938600_6_1"> Net Increase (Decrease) in Cash and Cash Equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_928679_1_1"> Cash And Cash Equivalents Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_928679_2_1"> Cash and Cash Equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:to="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:label="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_lbl" xml:lang="en-US" id="id_2591691_925153_1_1"> Cash And Cash Equivalents Restricted Cash And Cash Equivalents Policy </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_lbl" xml:lang="en-US" id="id_2591691_925153_2_1"> Restricted Cash </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:to="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_CashlessExerciseForIssuanceOfCommonStock" xlink:label="onvo_CashlessExerciseForIssuanceOfCommonStock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_CashlessExerciseForIssuanceOfCommonStock_lbl" xml:lang="en-US" id="id_2591691_1191790_3_1"> Cashless exercise for issuance of common stock. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_CashlessExerciseForIssuanceOfCommonStock_lbl" xml:lang="en-US" id="id_2591691_1191790_1_1"> Cashless Exercise For Issuance Of Common Stock </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_CashlessExerciseForIssuanceOfCommonStock_lbl" xml:lang="en-US" id="id_2591691_1191790_2_1"> Cashless exercise for issuance of common stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_CashlessExerciseForIssuanceOfCommonStock" xlink:to="onvo_CashlessExerciseForIssuanceOfCommonStock_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ChangeInFairValueOfWarrantLiabilities" xlink:label="onvo_ChangeInFairValueOfWarrantLiabilities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ChangeInFairValueOfWarrantLiabilities_lbl" xml:lang="en-US" id="id_2591691_1064731_3_1"> Change in fair value of warrant liabilities. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ChangeInFairValueOfWarrantLiabilities_lbl" xml:lang="en-US" id="id_2591691_1064731_1_1"> Change In Fair Value Of Warrant Liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ChangeInFairValueOfWarrantLiabilities_lbl" xml:lang="en-US" id="id_2591691_1064731_2_1"> Adjustments to estimated fair value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="onvo_ChangeInFairValueOfWarrantLiabilities_lbl" xml:lang="en-US" id="id_2591691_1064731_14_1"> Change in fair value of warrant liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ChangeInFairValueOfWarrantLiabilities" xlink:to="onvo_ChangeInFairValueOfWarrantLiabilities_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ChangesInFairValueOfDerivativeLiability" xlink:label="onvo_ChangesInFairValueOfDerivativeLiability"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ChangesInFairValueOfDerivativeLiability_lbl" xml:lang="en-US" id="id_2591691_1163657_3_1"> Change in fair value of derivative liability. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ChangesInFairValueOfDerivativeLiability_lbl" xml:lang="en-US" id="id_2591691_1163657_1_1"> Changes In Fair Value Of Derivative Liability </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ChangesInFairValueOfDerivativeLiability_lbl" xml:lang="en-US" id="id_2591691_1163657_2_1"> Change in fair value of the derivative liabilities increase and decrease </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ChangesInFairValueOfDerivativeLiability" xlink:to="onvo_ChangesInFairValueOfDerivativeLiability_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassOfStockLineItems" xlink:label="us-gaap_ClassOfStockLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xml:lang="en-US" id="id_2591691_925604_1_1"> Class Of Stock [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xml:lang="en-US" id="id_2591691_925604_2_1"> Class of Stock [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockLineItems" xlink:to="us-gaap_ClassOfStockLineItems_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ClassOfWarrantOrRightAmendedExercisePriceOfWarrantsOrRights" xlink:label="onvo_ClassOfWarrantOrRightAmendedExercisePriceOfWarrantsOrRights"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ClassOfWarrantOrRightAmendedExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" id="id_2591691_1110363_3_1"> Class of warrant or right amended exercise price of warrants or rights. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ClassOfWarrantOrRightAmendedExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" id="id_2591691_1110363_1_1"> Class Of Warrant Or Right Amended Exercise Price Of Warrants Or Rights </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ClassOfWarrantOrRightAmendedExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" id="id_2591691_1110363_2_1"> Exercise price of warrant Amended </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ClassOfWarrantOrRightAmendedExercisePriceOfWarrantsOrRights" xlink:to="onvo_ClassOfWarrantOrRightAmendedExercisePriceOfWarrantsOrRights_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassOfWarrantOrRightAxis" xlink:label="us-gaap_ClassOfWarrantOrRightAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightAxis_lbl" xml:lang="en-US" id="id_2591691_923791_1_1"> Class Of Warrant Or Right [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightAxis_lbl" xml:lang="en-US" id="id_2591691_923791_2_1"> Class of Warrant or Right [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightAxis" xlink:to="us-gaap_ClassOfWarrantOrRightAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassOfWarrantOrRightDomain" xlink:label="us-gaap_ClassOfWarrantOrRightDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightDomain_lbl" xml:lang="en-US" id="id_2591691_928960_1_1"> Class Of Warrant Or Right [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightDomain_lbl" xml:lang="en-US" id="id_2591691_928960_2_1"> Class of Warrant or Right [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightDomain" xlink:to="us-gaap_ClassOfWarrantOrRightDomain_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsAfterAmendment" xlink:label="onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsAfterAmendment"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsAfterAmendment_lbl" xml:lang="en-US" id="id_2591691_1191791_3_1"> Class of warrant or right exercise price of warrants after amendment. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsAfterAmendment_lbl" xml:lang="en-US" id="id_2591691_1191791_1_1"> Class Of Warrant Or Right Exercise Price Of Warrants After Amendment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsAfterAmendment_lbl" xml:lang="en-US" id="id_2591691_1191791_2_1"> Exercise price of warrants after amendment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsAfterAmendment" xlink:to="onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsAfterAmendment_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsBeforeAmendment" xlink:label="onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsBeforeAmendment"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsBeforeAmendment_lbl" xml:lang="en-US" id="id_2591691_1191792_3_1"> Class of warrant or right exercise price of warrants before amendment. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsBeforeAmendment_lbl" xml:lang="en-US" id="id_2591691_1191792_1_1"> Class Of Warrant Or Right Exercise Price Of Warrants Before Amendment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsBeforeAmendment_lbl" xml:lang="en-US" id="id_2591691_1191792_2_1"> Exercise price of warrants before amendment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsBeforeAmendment" xlink:to="onvo_ClassOfWarrantOrRightExercisePriceOfWarrantsBeforeAmendment_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" id="id_2591691_932954_1_1"> Class Of Warrant Or Right Exercise Price Of Warrants Or Rights </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl" xml:lang="en-US" id="id_2591691_932954_2_1"> Warrants exercisable price, per share </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights" xlink:to="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ClassOfWarrantOrRightInducedExerciseExpense" xlink:label="onvo_ClassOfWarrantOrRightInducedExerciseExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ClassOfWarrantOrRightInducedExerciseExpense_lbl" xml:lang="en-US" id="id_2591691_1191795_3_1"> Class of warrant or right induced exercise expense. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ClassOfWarrantOrRightInducedExerciseExpense_lbl" xml:lang="en-US" id="id_2591691_1191795_1_1"> Class Of Warrant Or Right Induced Exercise Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ClassOfWarrantOrRightInducedExerciseExpense_lbl" xml:lang="en-US" id="id_2591691_1191795_2_1"> Recognized expenses of warrants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ClassOfWarrantOrRightInducedExerciseExpense" xlink:to="onvo_ClassOfWarrantOrRightInducedExerciseExpense_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ClassOfWarrantOrRightIssued" xlink:label="onvo_ClassOfWarrantOrRightIssued"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ClassOfWarrantOrRightIssued_lbl" xml:lang="en-US" id="id_2591691_1093951_3_1"> Class of warrant or right issued. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ClassOfWarrantOrRightIssued_lbl" xml:lang="en-US" id="id_2591691_1093951_1_1"> Class Of Warrant Or Right Issued </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ClassOfWarrantOrRightIssued_lbl" xml:lang="en-US" id="id_2591691_1093951_2_1"> Warrants Issued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ClassOfWarrantOrRightIssued" xlink:to="onvo_ClassOfWarrantOrRightIssued_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ClassOfWarrantOrRightLife" xlink:label="onvo_ClassOfWarrantOrRightLife"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ClassOfWarrantOrRightLife_lbl" xml:lang="en-US" id="id_2591691_1191796_3_1"> Class of warrant or right life. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ClassOfWarrantOrRightLife_lbl" xml:lang="en-US" id="id_2591691_1191796_1_1"> Class Of Warrant Or Right Life </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ClassOfWarrantOrRightLife_lbl" xml:lang="en-US" id="id_2591691_1191796_2_1"> Life of warrants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ClassOfWarrantOrRightLife" xlink:to="onvo_ClassOfWarrantOrRightLife_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassOfWarrantOrRightOutstanding" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xml:lang="en-US" id="id_2591691_929417_1_1"> Class Of Warrant Or Right Outstanding </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xml:lang="en-US" id="id_2591691_929417_2_1"> Warrants to purchase common stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightOutstanding" xlink:to="us-gaap_ClassOfWarrantOrRightOutstanding_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ClassOfWarrantOrRightReclassificationFromLiabilityInstrumentsToEquityInstruments" xlink:label="onvo_ClassOfWarrantOrRightReclassificationFromLiabilityInstrumentsToEquityInstruments"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ClassOfWarrantOrRightReclassificationFromLiabilityInstrumentsToEquityInstruments_lbl" xml:lang="en-US" id="id_2591691_1191800_3_1"> Class of warrant or right reclassification from liability instruments to equity instruments. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ClassOfWarrantOrRightReclassificationFromLiabilityInstrumentsToEquityInstruments_lbl" xml:lang="en-US" id="id_2591691_1191800_1_1"> Class Of Warrant Or Right Reclassification From Liability Instruments To Equity Instruments </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ClassOfWarrantOrRightReclassificationFromLiabilityInstrumentsToEquityInstruments_lbl" xml:lang="en-US" id="id_2591691_1191800_2_1"> Reclassification of warrant </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ClassOfWarrantOrRightReclassificationFromLiabilityInstrumentsToEquityInstruments" xlink:to="onvo_ClassOfWarrantOrRightReclassificationFromLiabilityInstrumentsToEquityInstruments_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US" id="id_2591691_936604_1_1"> Commitments And Contingencies </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US" id="id_2591691_936604_2_1"> Commitments and Contingencies (Note 5) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingencies" xlink:to="us-gaap_CommitmentsAndContingencies_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xml:lang="en-US" id="id_2591691_930041_1_1"> Commitments And Contingencies Disclosure [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xml:lang="en-US" id="id_2591691_930041_2_1"> Commitments and Contingencies Disclosure [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommitmentsDisclosureTextBlock" xlink:label="us-gaap_CommitmentsDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_923322_1_1"> Commitments Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommitmentsDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_923322_2_1"> Commitments and Contingencies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsDisclosureTextBlock" xlink:to="us-gaap_CommitmentsDisclosureTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xml:lang="en-US" id="id_2591691_925879_1_1"> Common Stock Capital Shares Reserved For Future Issuance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xml:lang="en-US" id="id_2591691_925879_2_1"> Common stock reserved for future issuance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:to="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_CommonStockCapitalSharesReservedForFutureIssuanceTableTextBlock" xlink:label="onvo_CommonStockCapitalSharesReservedForFutureIssuanceTableTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_CommonStockCapitalSharesReservedForFutureIssuanceTableTextBlock_lbl" xml:lang="en-US" id="id_2591691_995851_3_1"> Common stock capital shares reserved for future issuance. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_CommonStockCapitalSharesReservedForFutureIssuanceTableTextBlock_lbl" xml:lang="en-US" id="id_2591691_995851_1_1"> Common Stock Capital Shares Reserved For Future Issuance Table [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_CommonStockCapitalSharesReservedForFutureIssuanceTableTextBlock_lbl" xml:lang="en-US" id="id_2591691_995851_2_1"> Common Stock Reserved for Future Issuance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_CommonStockCapitalSharesReservedForFutureIssuanceTableTextBlock" xlink:to="onvo_CommonStockCapitalSharesReservedForFutureIssuanceTableTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockMember" xlink:label="us-gaap_CommonStockMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US" id="id_2591691_930643_1_1"> Common Stock [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US" id="id_2591691_930643_2_1"> Common Stock [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockMember" xlink:to="us-gaap_CommonStockMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US" id="id_2591691_931741_1_1"> Common Stock Par Or Stated Value Per Share </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US" id="id_2591691_931741_2_1"> Common stock, par value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="us-gaap_CommonStockSharesAuthorized"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US" id="id_2591691_930676_1_1"> Common Stock Shares Authorized </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US" id="id_2591691_930676_2_1"> Common stock, shares authorized </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US" id="id_2591691_930676_12_1"> Shares authorized under shelf registration statement </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="us-gaap_CommonStockSharesIssued"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" id="id_2591691_925763_1_1"> Common Stock Shares Issued </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" id="id_2591691_925763_2_1"> Common stock, shares issued </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US" id="id_2591691_925763_12_1"> Issuance of Common stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="us-gaap_CommonStockSharesOutstanding"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_2591691_923588_1_1"> Common Stock Shares Outstanding </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_2591691_923588_2_1"> Common stock, shares outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US" id="id_2591691_935685_1_1"> Common Stock Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US" id="id_2591691_935685_2_1"> Common stock, $0.001 par value; 150,000,000 shares authorized, 76,818,625 and 64,686,919 shares issued and outstanding at September 30, 2013 and March 31, 2013, respectively </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockValue" xlink:to="us-gaap_CommonStockValue_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_CompanysStockholdersRetainedVotingInterest" xlink:label="onvo_CompanysStockholdersRetainedVotingInterest"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_CompanysStockholdersRetainedVotingInterest_lbl" xml:lang="en-US" id="id_2591691_1191809_3_1"> Company's stockholders retained voting interest. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_CompanysStockholdersRetainedVotingInterest_lbl" xml:lang="en-US" id="id_2591691_1191809_1_1"> Companys Stockholders Retained Voting Interest </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_CompanysStockholdersRetainedVotingInterest_lbl" xml:lang="en-US" id="id_2591691_1191809_2_1"> Company's stockholders retained voting interest </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_CompanysStockholdersRetainedVotingInterest" xlink:to="onvo_CompanysStockholdersRetainedVotingInterest_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ComprehensiveIncomePolicyPolicyTextBlock" xlink:label="us-gaap_ComprehensiveIncomePolicyPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_925034_1_1"> Comprehensive Income Policy Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_925034_2_1"> Comprehensive Income (Loss) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComprehensiveIncomePolicyPolicyTextBlock" xlink:to="us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConcentrationRiskDisclosureTextBlock" xlink:label="us-gaap_ConcentrationRiskDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConcentrationRiskDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_926312_1_1"> Concentration Risk Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ConcentrationRiskDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_926312_2_1"> Concentrations </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskDisclosureTextBlock" xlink:to="us-gaap_ConcentrationRiskDisclosureTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConvertibleNotesPayableMember" xlink:label="us-gaap_ConvertibleNotesPayableMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConvertibleNotesPayableMember_lbl" xml:lang="en-US" id="id_2591691_924725_1_1"> Convertible Notes Payable [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ConvertibleNotesPayableMember_lbl" xml:lang="en-US" id="id_2591691_924725_2_1"> Convertible Notes Payable [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertibleNotesPayableMember" xlink:to="us-gaap_ConvertibleNotesPayableMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ConvertibleNotesPrincipalAmount" xlink:label="onvo_ConvertibleNotesPrincipalAmount"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ConvertibleNotesPrincipalAmount_lbl" xml:lang="en-US" id="id_2591691_1098871_3_1"> Convertible notes principal amount. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ConvertibleNotesPrincipalAmount_lbl" xml:lang="en-US" id="id_2591691_1098871_1_1"> Convertible Notes Principal Amount </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ConvertibleNotesPrincipalAmount_lbl" xml:lang="en-US" id="id_2591691_1098871_2_1"> Convertible notes principal balance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ConvertibleNotesPrincipalAmount" xlink:to="onvo_ConvertibleNotesPrincipalAmount_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CostOfGoodsSold" xlink:label="us-gaap_CostOfGoodsSold"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CostOfGoodsSold_lbl" xml:lang="en-US" id="id_2591691_937862_1_1"> Cost Of Goods Sold </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CostOfGoodsSold_lbl" xml:lang="en-US" id="id_2591691_937862_2_1"> Cost of product revenue </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostOfGoodsSold" xlink:to="us-gaap_CostOfGoodsSold_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CostOfServicesAmortization" xlink:label="us-gaap_CostOfServicesAmortization"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CostOfServicesAmortization_lbl" xml:lang="en-US" id="id_2591691_939396_1_1"> Cost Of Services Amortization </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CostOfServicesAmortization_lbl" xml:lang="en-US" id="id_2591691_939396_2_1"> Amortization of warrants issued for services </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostOfServicesAmortization" xlink:to="us-gaap_CostOfServicesAmortization_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_CostsAssociatedWithMerger" xlink:label="onvo_CostsAssociatedWithMerger"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_CostsAssociatedWithMerger_lbl" xml:lang="en-US" id="id_2591691_1191814_3_1"> Costs associated with merger. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_CostsAssociatedWithMerger_lbl" xml:lang="en-US" id="id_2591691_1191814_1_1"> Costs Associated With Merger </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="onvo_CostsAssociatedWithMerger_lbl" xml:lang="en-US" id="id_2591691_1191814_14_1"> Costs associated with the merger </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_CostsAssociatedWithMerger" xlink:to="onvo_CostsAssociatedWithMerger_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="dei_CurrentFiscalYearEndDate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US" id="id_2591691_922004_1_1"> Current Fiscal Year End Date </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US" id="id_2591691_922004_2_1"> Current Fiscal Year End Date </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature" xlink:label="us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature_lbl" xml:lang="en-US" id="id_2591691_934363_1_1"> Debt Instrument Convertible Beneficial Conversion Feature </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature_lbl" xml:lang="en-US" id="id_2591691_934363_2_1"> Beneficial conversion feature of convertible notes payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature" xlink:to="us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US" id="id_2591691_924352_1_1"> Debt Instrument Interest Rate Stated Percentage </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US" id="id_2591691_924352_2_1"> Convertible notes, interest rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_DecreaseInWarrantLiability" xlink:label="onvo_DecreaseInWarrantLiability"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_DecreaseInWarrantLiability_lbl" xml:lang="en-US" id="id_2591691_1118395_3_1"> Decrease In Warrant Liability </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_DecreaseInWarrantLiability_lbl" xml:lang="en-US" id="id_2591691_1118395_1_1"> Decrease In Warrant Liability </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_DecreaseInWarrantLiability_lbl" xml:lang="en-US" id="id_2591691_1118395_2_1"> Warrants liability </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_DecreaseInWarrantLiability" xlink:to="onvo_DecreaseInWarrantLiability_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_DeductionInWarrantLiability" xlink:label="onvo_DeductionInWarrantLiability"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_DeductionInWarrantLiability_lbl" xml:lang="en-US" id="id_2591691_1191816_3_1"> Deduction in warrant liability. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_DeductionInWarrantLiability_lbl" xml:lang="en-US" id="id_2591691_1191816_1_1"> Deduction In Warrant Liability </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_DeductionInWarrantLiability_lbl" xml:lang="en-US" id="id_2591691_1191816_2_1"> Warrant liability reduced </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_DeductionInWarrantLiability" xlink:to="onvo_DeductionInWarrantLiability_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredRevenueCurrent" xlink:label="us-gaap_DeferredRevenueCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredRevenueCurrent_lbl" xml:lang="en-US" id="id_2591691_935460_1_1"> Deferred Revenue Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredRevenueCurrent_lbl" xml:lang="en-US" id="id_2591691_935460_2_1"> Deferred revenue </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DeferredRevenueCurrent_lbl" xml:lang="en-US" id="id_2591691_935460_12_1"> Deferred revenue related to its collaborative research programs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRevenueCurrent" xlink:to="us-gaap_DeferredRevenueCurrent_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredRevenueNoncurrent" xlink:label="us-gaap_DeferredRevenueNoncurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredRevenueNoncurrent_lbl" xml:lang="en-US" id="id_2591691_936354_1_1"> Deferred Revenue Noncurrent </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredRevenueNoncurrent_lbl" xml:lang="en-US" id="id_2591691_936354_2_1"> Deferred revenue, net of current portion </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRevenueNoncurrent" xlink:to="us-gaap_DeferredRevenueNoncurrent_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="us-gaap_DepreciationDepletionAndAmortization"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xml:lang="en-US" id="id_2591691_939791_1_1"> Depreciation Depletion And Amortization </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xml:lang="en-US" id="id_2591691_939791_2_1"> Depreciation and amortization </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationDepletionAndAmortization" xlink:to="us-gaap_DepreciationDepletionAndAmortization_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock" xlink:label="us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_927562_1_1"> Depreciation Depletion And Amortization Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_927562_2_1"> Fixed Assets and Depreciation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock" xlink:to="us-gaap_DepreciationDepletionAndAmortizationPolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral_lbl" xml:lang="en-US" id="id_2591691_935065_1_1"> Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral_lbl" xml:lang="en-US" id="id_2591691_935065_2_1"> Fair value of the warrant liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" xlink:to="us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" xlink:label="us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_lbl" xml:lang="en-US" id="id_2591691_931097_1_1"> Derivative Financial Instruments Liabilities [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_lbl" xml:lang="en-US" id="id_2591691_931097_2_1"> Warrant Derivative Liability [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" xlink:to="us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeInstrumentDetailAbstract" xlink:label="us-gaap_DerivativeInstrumentDetailAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeInstrumentDetailAbstract_lbl" xml:lang="en-US" id="id_2591691_924118_1_1"> Derivative Instrument Detail [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeInstrumentDetailAbstract_lbl" xml:lang="en-US" id="id_2591691_924118_2_1"> Derivative Instrument Detail [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentDetailAbstract" xlink:to="us-gaap_DerivativeInstrumentDetailAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl" xml:lang="en-US" id="id_2591691_924812_1_1"> Derivative Instruments And Hedging Activities Disclosure [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl" xml:lang="en-US" id="id_2591691_924812_2_1"> Derivative Instruments and Hedging Activities Disclosure [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:to="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_928120_1_1"> Derivative Instruments And Hedging Activities Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_928120_2_1"> Derivative Liability </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:to="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeLiabilitiesCurrent" xlink:label="us-gaap_DerivativeLiabilitiesCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_2591691_934412_1_1"> Derivative Liabilities Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeLiabilitiesCurrent_lbl" xml:lang="en-US" id="id_2591691_934412_2_1"> Warrant liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilitiesCurrent" xlink:to="us-gaap_DerivativeLiabilitiesCurrent_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeLiabilitiesNoncurrent" xlink:label="us-gaap_DerivativeLiabilitiesNoncurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_2591691_935603_1_1"> Derivative Liabilities Noncurrent </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_DerivativeLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_2591691_935603_4_1"> Warrant Derivative Liability, Ending balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_DerivativeLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_2591691_935603_5_1"> Warrant Derivative Liability, Beginning balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="id_2591691_935603_2_1"> Warrant liability </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLiabilitiesNoncurrent" xlink:to="us-gaap_DerivativeLiabilitiesNoncurrent_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeLineItems" xlink:label="us-gaap_DerivativeLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeLineItems_lbl" xml:lang="en-US" id="id_2591691_930104_1_1"> Derivative [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeLineItems_lbl" xml:lang="en-US" id="id_2591691_930104_2_1"> Derivative [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeLineItems" xlink:to="us-gaap_DerivativeLineItems_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativesPolicyTextBlock" xlink:label="us-gaap_DerivativesPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativesPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_931451_1_1"> Derivatives Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativesPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_931451_2_1"> Derivative Financial Instruments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativesPolicyTextBlock" xlink:to="us-gaap_DerivativesPolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DerivativeTable" xlink:label="us-gaap_DerivativeTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DerivativeTable_lbl" xml:lang="en-US" id="id_2591691_930138_1_1"> Derivative [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DerivativeTable_lbl" xml:lang="en-US" id="id_2591691_930138_2_1"> Derivative [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeTable" xlink:to="us-gaap_DerivativeTable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DevelopmentStageEnterpriseDeficitAccumulatedDuringDevelopmentStage" xlink:label="us-gaap_DevelopmentStageEnterpriseDeficitAccumulatedDuringDevelopmentStage"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DevelopmentStageEnterpriseDeficitAccumulatedDuringDevelopmentStage_lbl" xml:lang="en-US" id="id_2591691_939146_1_1"> Development Stage Enterprise Deficit Accumulated During Development Stage </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DevelopmentStageEnterpriseDeficitAccumulatedDuringDevelopmentStage_lbl" xml:lang="en-US" id="id_2591691_939146_2_1"> Accumulated deficit </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DevelopmentStageEnterpriseDeficitAccumulatedDuringDevelopmentStage_lbl" xml:lang="en-US" id="id_2591691_939146_14_1"> Deficit accumulated during the development stage </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DevelopmentStageEnterpriseDeficitAccumulatedDuringDevelopmentStage" xlink:to="us-gaap_DevelopmentStageEnterpriseDeficitAccumulatedDuringDevelopmentStage_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" xml:lang="en-US" id="id_2591691_930617_1_1"> Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" xml:lang="en-US" id="id_2591691_930617_2_1"> Disclosure of Compensation Related Costs, Share-based Payments [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_DocumentAndEntityInformationAbstract" xlink:label="onvo_DocumentAndEntityInformationAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_DocumentAndEntityInformationAbstract_lbl" xml:lang="en-US" id="id_2591691_951207_3_1"> Document and entity information. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_DocumentAndEntityInformationAbstract_lbl" xml:lang="en-US" id="id_2591691_951207_1_1"> Document And Entity Information [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_DocumentAndEntityInformationAbstract_lbl" xml:lang="en-US" id="id_2591691_951207_2_1"> Document And Entity Information [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_DocumentAndEntityInformationAbstract" xlink:to="onvo_DocumentAndEntityInformationAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="dei_DocumentFiscalPeriodFocus"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xml:lang="en-US" id="id_2591691_922019_1_1"> Document Fiscal Period Focus </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xml:lang="en-US" id="id_2591691_922019_2_1"> Document Fiscal Period Focus </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalPeriodFocus" xlink:to="dei_DocumentFiscalPeriodFocus_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="dei_DocumentFiscalYearFocus"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalYearFocus_lbl" xml:lang="en-US" id="id_2591691_921974_1_1"> Document Fiscal Year Focus </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_DocumentFiscalYearFocus_lbl" xml:lang="en-US" id="id_2591691_921974_2_1"> Document Fiscal Year Focus </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalYearFocus" xlink:to="dei_DocumentFiscalYearFocus_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="dei_DocumentPeriodEndDate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentPeriodEndDate_lbl" xml:lang="en-US" id="id_2591691_921989_1_1"> Document Period End Date </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_DocumentPeriodEndDate_lbl" xml:lang="en-US" id="id_2591691_921989_2_1"> Document Period End Date </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_DocumentType" xlink:label="dei_DocumentType"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentType_lbl" xml:lang="en-US" id="id_2591691_921984_1_1"> Document Type </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_DocumentType_lbl" xml:lang="en-US" id="id_2591691_921984_2_1"> Document Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_DurationAfterWhichWarrantsAreExercisable" xlink:label="onvo_DurationAfterWhichWarrantsAreExercisable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_DurationAfterWhichWarrantsAreExercisable_lbl" xml:lang="en-US" id="id_2591691_1191822_3_1"> Duration after which warrants are exercisable. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_DurationAfterWhichWarrantsAreExercisable_lbl" xml:lang="en-US" id="id_2591691_1191822_1_1"> Duration After Which Warrants Are Exercisable </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_DurationAfterWhichWarrantsAreExercisable_lbl" xml:lang="en-US" id="id_2591691_1191822_2_1"> Warrants maturity term </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_DurationAfterWhichWarrantsAreExercisable" xlink:to="onvo_DurationAfterWhichWarrantsAreExercisable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="us-gaap_EarningsPerShareBasic"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US" id="id_2591691_925621_1_1"> Earnings Per Share Basic </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US" id="id_2591691_925621_2_1"> Net income (loss) per common share - basic </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasic" xlink:to="us-gaap_EarningsPerShareBasic_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="us-gaap_EarningsPerShareDiluted"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xml:lang="en-US" id="id_2591691_924397_1_1"> Earnings Per Share Diluted </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xml:lang="en-US" id="id_2591691_924397_2_1"> Net income (loss) per common share - diluted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDiluted" xlink:to="us-gaap_EarningsPerShareDiluted_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_931897_1_1"> Earnings Per Share Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_931897_2_1"> Net Income (Loss) Per Share </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerSharePolicyTextBlock" xlink:to="us-gaap_EarningsPerSharePolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xml:lang="en-US" id="id_2591691_929567_1_1"> Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition 1 </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xml:lang="en-US" id="id_2591691_929567_2_1"> Unrecognized stock-based compensation expense recognition maximum weighted average period </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xml:lang="en-US" id="id_2591691_938597_1_1"> Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xml:lang="en-US" id="id_2591691_938597_2_1"> Unrecognized stock-based compensation expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_lbl" xml:lang="en-US" id="id_2591691_940537_1_1"> Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_lbl" xml:lang="en-US" id="id_2591691_940537_2_1"> Total unrecognized compensation cost related to unvested stock option grants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="us-gaap_EmployeeStockOptionMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xml:lang="en-US" id="id_2591691_924898_1_1"> Employee Stock Option [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xml:lang="en-US" id="id_2591691_924898_2_1"> Stock options [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeStockOptionMember" xlink:to="us-gaap_EmployeeStockOptionMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="dei_EntityCentralIndexKey"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCentralIndexKey_lbl" xml:lang="en-US" id="id_2591691_921997_1_1"> Entity Central Index Key </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_EntityCentralIndexKey_lbl" xml:lang="en-US" id="id_2591691_921997_2_1"> Entity Central Index Key </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="dei_EntityCommonStockSharesOutstanding"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_2591691_922042_1_1"> Entity Common Stock Shares Outstanding </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xml:lang="en-US" id="id_2591691_922042_2_1"> Entity Common Stock, Shares Outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCommonStockSharesOutstanding" xlink:to="dei_EntityCommonStockSharesOutstanding_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityFilerCategory" xlink:label="dei_EntityFilerCategory"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityFilerCategory_lbl" xml:lang="en-US" id="id_2591691_921955_1_1"> Entity Filer Category </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_EntityFilerCategory_lbl" xml:lang="en-US" id="id_2591691_921955_2_1"> Entity Filer Category </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFilerCategory" xlink:to="dei_EntityFilerCategory_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityRegistrantName" xlink:label="dei_EntityRegistrantName"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityRegistrantName_lbl" xml:lang="en-US" id="id_2591691_921937_1_1"> Entity Registrant Name </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_EntityRegistrantName_lbl" xml:lang="en-US" id="id_2591691_921937_2_1"> Entity Registrant Name </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityAbstract" xlink:label="us-gaap_EquityAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityAbstract_lbl" xml:lang="en-US" id="id_2591691_932367_1_1"> Equity [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityAbstract_lbl" xml:lang="en-US" id="id_2591691_932367_2_1"> Equity [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityAbstract" xlink:to="us-gaap_EquityAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="us-gaap_EquityComponentDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityComponentDomain_lbl" xml:lang="en-US" id="id_2591691_927325_1_1"> Equity Component [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityComponentDomain_lbl" xml:lang="en-US" id="id_2591691_927325_2_1"> Equity Component [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_EquityComponentDomain_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityFairValueAdjustment" xlink:label="us-gaap_EquityFairValueAdjustment"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityFairValueAdjustment_lbl" xml:lang="en-US" id="id_2591691_934159_1_1"> Equity Fair Value Adjustment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityFairValueAdjustment_lbl" xml:lang="en-US" id="id_2591691_934159_2_1"> Estimated fair value of warrants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityFairValueAdjustment" xlink:to="us-gaap_EquityFairValueAdjustment_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_EquityIncentivePlanTwoThousandEightMember" xlink:label="onvo_EquityIncentivePlanTwoThousandEightMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_EquityIncentivePlanTwoThousandEightMember_lbl" xml:lang="en-US" id="id_2591691_1035583_3_1"> Equity incentive plan. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_EquityIncentivePlanTwoThousandEightMember_lbl" xml:lang="en-US" id="id_2591691_1035583_1_1"> Equity Incentive Plan Two Thousand Eight [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_EquityIncentivePlanTwoThousandEightMember_lbl" xml:lang="en-US" id="id_2591691_1035583_2_1"> Equity Incentive Plan 2008 [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_EquityIncentivePlanTwoThousandEightMember" xlink:to="onvo_EquityIncentivePlanTwoThousandEightMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_EquityIncentivePlanTwoThousandTwelveMember" xlink:label="onvo_EquityIncentivePlanTwoThousandTwelveMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_EquityIncentivePlanTwoThousandTwelveMember_lbl" xml:lang="en-US" id="id_2591691_1191823_3_1"> Equity incentive plan two thousand twelve. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_EquityIncentivePlanTwoThousandTwelveMember_lbl" xml:lang="en-US" id="id_2591691_1191823_1_1"> Equity Incentive Plan Two Thousand Twelve [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_EquityIncentivePlanTwoThousandTwelveMember_lbl" xml:lang="en-US" id="id_2591691_1191823_2_1"> Equity Incentive Plan 2012 [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_EquityIncentivePlanTwoThousandTwelveMember" xlink:to="onvo_EquityIncentivePlanTwoThousandTwelveMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ExercisedDerivativeLiabilities" xlink:label="onvo_ExercisedDerivativeLiabilities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ExercisedDerivativeLiabilities_lbl" xml:lang="en-US" id="id_2591691_1191824_3_1"> Exercised derivative liabilities. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ExercisedDerivativeLiabilities_lbl" xml:lang="en-US" id="id_2591691_1191824_1_1"> Exercised Derivative Liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ExercisedDerivativeLiabilities_lbl" xml:lang="en-US" id="id_2591691_1191824_2_1"> Exercised derivative liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ExercisedDerivativeLiabilities" xlink:to="onvo_ExercisedDerivativeLiabilities_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ExpenseRelatedToDistributionOrServicingAndUnderwritingFees" xlink:label="us-gaap_ExpenseRelatedToDistributionOrServicingAndUnderwritingFees"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ExpenseRelatedToDistributionOrServicingAndUnderwritingFees_lbl" xml:lang="en-US" id="id_2591691_940826_1_1"> Expense Related To Distribution Or Servicing And Underwriting Fees </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ExpenseRelatedToDistributionOrServicingAndUnderwritingFees_lbl" xml:lang="en-US" id="id_2591691_940826_2_1"> Underwriting discounts and commissions and other offering expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ExpenseRelatedToDistributionOrServicingAndUnderwritingFees" xlink:to="us-gaap_ExpenseRelatedToDistributionOrServicingAndUnderwritingFees_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xml:lang="en-US" id="id_2591691_926281_1_1"> Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xml:lang="en-US" id="id_2591691_926281_2_1"> Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xml:lang="en-US" id="id_2591691_930654_1_1"> Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xml:lang="en-US" id="id_2591691_930654_2_1"> Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_FairValueAssumptionExpectedDividendRate" xlink:label="onvo_FairValueAssumptionExpectedDividendRate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_FairValueAssumptionExpectedDividendRate_lbl" xml:lang="en-US" id="id_2591691_1191828_3_1"> Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_FairValueAssumptionExpectedDividendRate_lbl" xml:lang="en-US" id="id_2591691_1191828_1_1"> Fair Value Assumption Expected Dividend Rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_FairValueAssumptionExpectedDividendRate_lbl" xml:lang="en-US" id="id_2591691_1191828_2_1"> Dividend yield </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_FairValueAssumptionExpectedDividendRate" xlink:to="onvo_FairValueAssumptionExpectedDividendRate_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssumptionsExercisePrice" xlink:label="us-gaap_FairValueAssumptionsExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssumptionsExercisePrice_lbl" xml:lang="en-US" id="id_2591691_932438_1_1"> Fair Value Assumptions Exercise Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssumptionsExercisePrice_lbl" xml:lang="en-US" id="id_2591691_932438_2_1"> Exercise price per share </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssumptionsExercisePrice" xlink:to="us-gaap_FairValueAssumptionsExercisePrice_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssumptionsExpectedTerm" xlink:label="us-gaap_FairValueAssumptionsExpectedTerm"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssumptionsExpectedTerm_lbl" xml:lang="en-US" id="id_2591691_923769_1_1"> Fair Value Assumptions Expected Term </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssumptionsExpectedTerm_lbl" xml:lang="en-US" id="id_2591691_923769_2_1"> Remaining expected term of underlying securities (years) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssumptionsExpectedTerm" xlink:to="us-gaap_FairValueAssumptionsExpectedTerm_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssumptionsExpectedVolatilityRate" xlink:label="us-gaap_FairValueAssumptionsExpectedVolatilityRate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US" id="id_2591691_924771_1_1"> Fair Value Assumptions Expected Volatility Rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US" id="id_2591691_924771_2_1"> Expected volatility </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssumptionsExpectedVolatilityRate" xlink:to="us-gaap_FairValueAssumptionsExpectedVolatilityRate_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueAssumptionsRiskFreeInterestRate" xlink:label="us-gaap_FairValueAssumptionsRiskFreeInterestRate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US" id="id_2591691_928541_1_1"> Fair Value Assumptions Risk Free Interest Rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US" id="id_2591691_928541_2_1"> Risk-free interest rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssumptionsRiskFreeInterestRate" xlink:to="us-gaap_FairValueAssumptionsRiskFreeInterestRate_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xml:lang="en-US" id="id_2591691_929790_1_1"> Fair Value By Fair Value Hierarchy Level [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xml:lang="en-US" id="id_2591691_929790_2_1"> Fair Value, Hierarchy [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByLiabilityClassAxis" xlink:label="us-gaap_FairValueByLiabilityClassAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByLiabilityClassAxis_lbl" xml:lang="en-US" id="id_2591691_927111_1_1"> Fair Value By Liability Class [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueByLiabilityClassAxis_lbl" xml:lang="en-US" id="id_2591691_927111_2_1"> Liability Class [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByLiabilityClassAxis" xlink:to="us-gaap_FairValueByLiabilityClassAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xml:lang="en-US" id="id_2591691_928472_1_1"> Fair Value By Measurement Frequency [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xml:lang="en-US" id="id_2591691_928472_2_1"> Measurement Frequency [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByMeasurementFrequencyAxis" xlink:to="us-gaap_FairValueByMeasurementFrequencyAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="us-gaap_FairValueDisclosuresAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xml:lang="en-US" id="id_2591691_930808_1_1"> Fair Value Disclosures [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xml:lang="en-US" id="id_2591691_930808_2_1"> Fair Value Disclosures [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueDisclosuresAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="us-gaap_FairValueInputsLevel1Member"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xml:lang="en-US" id="id_2591691_925736_1_1"> Fair Value Inputs Level 1 [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xml:lang="en-US" id="id_2591691_925736_2_1"> Quoted Prices in Active Markets (Level 1) [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel1Member" xlink:to="us-gaap_FairValueInputsLevel1Member_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="us-gaap_FairValueInputsLevel2Member"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xml:lang="en-US" id="id_2591691_925851_1_1"> Fair Value Inputs Level 2 [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xml:lang="en-US" id="id_2591691_925851_2_1"> Significant Other Observable Inputs (Level 2) [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel2Member" xlink:to="us-gaap_FairValueInputsLevel2Member_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="us-gaap_FairValueInputsLevel3Member"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xml:lang="en-US" id="id_2591691_929831_1_1"> Fair Value Inputs Level 3 [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xml:lang="en-US" id="id_2591691_929831_2_1"> Significant Other Unobservable Inputs (Level 3) [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel3Member" xlink:to="us-gaap_FairValueInputsLevel3Member_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock_lbl" xml:lang="en-US" id="id_2591691_923219_1_1"> Fair Value Liabilities Measured On Recurring Basis [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock_lbl" xml:lang="en-US" id="id_2591691_923219_2_1"> Estimated Fair Values of Liabilities Measured on Recurring Basis </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_lbl" xml:lang="en-US" id="id_2591691_927500_1_1"> Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation By Liability Class [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_lbl" xml:lang="en-US" id="id_2591691_927500_2_1"> Fair Value by Liability Class [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_lbl" xml:lang="en-US" id="id_2591691_925195_1_1"> Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_lbl" xml:lang="en-US" id="id_2591691_925195_2_1"> Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xml:lang="en-US" id="id_2591691_927929_1_1"> Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xml:lang="en-US" id="id_2591691_927929_2_1"> Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xml:lang="en-US" id="id_2591691_927992_1_1"> Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xml:lang="en-US" id="id_2591691_927992_2_1"> Activity for Liabilities Measured at Estimated Fair Value Using Unobservable Inputs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xml:lang="en-US" id="id_2591691_927508_1_1"> Fair Value Measurement Frequency [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xml:lang="en-US" id="id_2591691_927508_2_1"> Fair Value, Measurement Frequency [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementFrequencyDomain" xlink:to="us-gaap_FairValueMeasurementFrequencyDomain_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementPolicyPolicyTextBlock" xlink:label="us-gaap_FairValueMeasurementPolicyPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_924053_1_1"> Fair Value Measurement Policy Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_924053_2_1"> Fair Value Measurement </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementPolicyPolicyTextBlock" xlink:to="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xml:lang="en-US" id="id_2591691_930398_1_1"> Fair Value Measurements Fair Value Hierarchy [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xml:lang="en-US" id="id_2591691_930398_2_1"> Fair Value Hierarchy [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="us-gaap_FairValueMeasurementsRecurringMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xml:lang="en-US" id="id_2591691_926284_1_1"> Fair Value Measurements Recurring [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xml:lang="en-US" id="id_2591691_926284_2_1"> Fair Value, Measurements, Recurring [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsRecurringMember" xlink:to="us-gaap_FairValueMeasurementsRecurringMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl" xml:lang="en-US" id="id_2591691_934288_1_1"> Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Issues </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl" xml:lang="en-US" id="id_2591691_934288_2_1"> Issuances </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xml:lang="en-US" id="id_2591691_931938_1_1"> Fair Value Of Financial Instruments Policy </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xml:lang="en-US" id="id_2591691_931938_2_1"> Financial Instruments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:to="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_FairValueOfWarrantLiabilitiesInExcessOfProceedsReceived" xlink:label="onvo_FairValueOfWarrantLiabilitiesInExcessOfProceedsReceived"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_FairValueOfWarrantLiabilitiesInExcessOfProceedsReceived_lbl" xml:lang="en-US" id="id_2591691_1191831_3_1"> Fair value of warrant liabilities in excess of proceeds received. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_FairValueOfWarrantLiabilitiesInExcessOfProceedsReceived_lbl" xml:lang="en-US" id="id_2591691_1191831_1_1"> Fair Value Of Warrant Liabilities In Excess Of Proceeds Received </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_FairValueOfWarrantLiabilitiesInExcessOfProceedsReceived_lbl" xml:lang="en-US" id="id_2591691_1191831_2_1"> Fair value of warrant liabilities in excess of proceeds </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="onvo_FairValueOfWarrantLiabilitiesInExcessOfProceedsReceived_lbl" xml:lang="en-US" id="id_2591691_1191831_14_1"> Fair value of warrant liabilities in excess of proceeds received </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_FairValueOfWarrantLiabilitiesInExcessOfProceedsReceived" xlink:to="onvo_FairValueOfWarrantLiabilitiesInExcessOfProceedsReceived_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_FeeForAdditionalResearchAndDevelopmentServices" xlink:label="onvo_FeeForAdditionalResearchAndDevelopmentServices"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_FeeForAdditionalResearchAndDevelopmentServices_lbl" xml:lang="en-US" id="id_2591691_1191834_3_1"> Fee for additional research and development services. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_FeeForAdditionalResearchAndDevelopmentServices_lbl" xml:lang="en-US" id="id_2591691_1191834_1_1"> Fee For Additional Research And Development Services </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_FeeForAdditionalResearchAndDevelopmentServices_lbl" xml:lang="en-US" id="id_2591691_1191834_2_1"> Fee for additional research and development services </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_FeeForAdditionalResearchAndDevelopmentServices" xlink:to="onvo_FeeForAdditionalResearchAndDevelopmentServices_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_FinancingTransactionCostsInExcessOfProceedsReceived" xlink:label="onvo_FinancingTransactionCostsInExcessOfProceedsReceived"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_FinancingTransactionCostsInExcessOfProceedsReceived_lbl" xml:lang="en-US" id="id_2591691_1191835_3_1"> Financing transaction costs in excess of proceeds received. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_FinancingTransactionCostsInExcessOfProceedsReceived_lbl" xml:lang="en-US" id="id_2591691_1191835_1_1"> Financing Transaction Costs In Excess Of Proceeds Received </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="onvo_FinancingTransactionCostsInExcessOfProceedsReceived_lbl" xml:lang="en-US" id="id_2591691_1191835_14_1"> Financing transaction costs in excess of proceeds received </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_FinancingTransactionCostsInExcessOfProceedsReceived" xlink:to="onvo_FinancingTransactionCostsInExcessOfProceedsReceived_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_FiscalYearDisclosureTextBlock" xlink:label="onvo_FiscalYearDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_FiscalYearDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_1191836_3_1"> Fiscal year. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_FiscalYearDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_1191836_1_1"> Fiscal Year Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_FiscalYearDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_1191836_2_1"> Change in Fiscal Year End </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_FiscalYearDisclosureTextBlock" xlink:to="onvo_FiscalYearDisclosureTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_FormerSecurityHoldersCommonStockVotingInterest" xlink:label="onvo_FormerSecurityHoldersCommonStockVotingInterest"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_FormerSecurityHoldersCommonStockVotingInterest_lbl" xml:lang="en-US" id="id_2591691_1191837_3_1"> Former security holders common stock voting interest. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_FormerSecurityHoldersCommonStockVotingInterest_lbl" xml:lang="en-US" id="id_2591691_1191837_1_1"> Former Security Holders Common Stock Voting Interest </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_FormerSecurityHoldersCommonStockVotingInterest_lbl" xml:lang="en-US" id="id_2591691_1191837_2_1"> Former security holders common stock voting interest </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_FormerSecurityHoldersCommonStockVotingInterest" xlink:to="onvo_FormerSecurityHoldersCommonStockVotingInterest_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets" xlink:label="us-gaap_GainLossOnDispositionOfAssets"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xml:lang="en-US" id="id_2591691_935202_1_1"> Gain Loss On Disposition Of Assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xml:lang="en-US" id="id_2591691_935202_2_1"> Loss on disposal of fixed assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xml:lang="en-US" id="id_2591691_935202_14_1"> Loss on disposal of fixed assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnDispositionOfAssets" xlink:to="us-gaap_GainLossOnDispositionOfAssets_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GeneralAndAdministrativeExpenseMember" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xml:lang="en-US" id="id_2591691_925832_1_1"> General And Administrative Expense [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xml:lang="en-US" id="id_2591691_925832_2_1"> General and administrative expense [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralAndAdministrativeExpenseMember" xlink:to="us-gaap_GeneralAndAdministrativeExpenseMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GrantsReceivable" xlink:label="us-gaap_GrantsReceivable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GrantsReceivable_lbl" xml:lang="en-US" id="id_2591691_938290_1_1"> Grants Receivable </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GrantsReceivable_lbl" xml:lang="en-US" id="id_2591691_938290_2_1"> Grant receivable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GrantsReceivable" xlink:to="us-gaap_GrantsReceivable_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_GrantsReceivablePolicyTextBlock" xlink:label="onvo_GrantsReceivablePolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_GrantsReceivablePolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_1191839_3_1"> Grants receivable. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_GrantsReceivablePolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_1191839_1_1"> Grants Receivable Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_GrantsReceivablePolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_1191839_2_1"> Grant Receivable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_GrantsReceivablePolicyTextBlock" xlink:to="onvo_GrantsReceivablePolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ImpairmentOfLongLivedAssetsHeldForUse" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsHeldForUse"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_lbl" xml:lang="en-US" id="id_2591691_937038_1_1"> Impairment Of Long Lived Assets Held For Use </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_lbl" xml:lang="en-US" id="id_2591691_937038_2_1"> Impairment of long-lived assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairmentOfLongLivedAssetsHeldForUse" xlink:to="us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_931752_1_1"> Impairment Or Disposal Of Long Lived Assets Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_931752_2_1"> Impairment of Long-Lived Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:to="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xml:lang="en-US" id="id_2591691_927850_1_1"> Income Statement [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xml:lang="en-US" id="id_2591691_927850_2_1"> Income Statement [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="us-gaap_IncomeStatementLocationAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xml:lang="en-US" id="id_2591691_927015_1_1"> Income Statement Location [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xml:lang="en-US" id="id_2591691_927015_2_1"> Income Statement Location [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementLocationAxis" xlink:to="us-gaap_IncomeStatementLocationAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="us-gaap_IncomeStatementLocationDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xml:lang="en-US" id="id_2591691_931901_1_1"> Income Statement Location [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xml:lang="en-US" id="id_2591691_931901_2_1"> Income Statement Location [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementLocationDomain" xlink:to="us-gaap_IncomeStatementLocationDomain_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeTaxesPaid" xlink:label="us-gaap_IncomeTaxesPaid"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxesPaid_lbl" xml:lang="en-US" id="id_2591691_934415_1_1"> Income Taxes Paid </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeTaxesPaid_lbl" xml:lang="en-US" id="id_2591691_934415_2_1"> Income Taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxesPaid" xlink:to="us-gaap_IncomeTaxesPaid_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="us-gaap_IncomeTaxPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_932576_1_1"> Income Tax Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_932576_2_1"> Income Taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxPolicyTextBlock" xlink:to="us-gaap_IncomeTaxPolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US" id="id_2591691_938987_1_1"> Increase Decrease In Accounts Payable </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xml:lang="en-US" id="id_2591691_938987_2_1"> Accounts payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayable" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xml:lang="en-US" id="id_2591691_938916_1_1"> Increase Decrease In Accrued Liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xml:lang="en-US" id="id_2591691_938916_2_1"> Accrued expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_IncreaseDecreaseInCashDepositsReleasedFromRestriction" xlink:label="onvo_IncreaseDecreaseInCashDepositsReleasedFromRestriction"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_IncreaseDecreaseInCashDepositsReleasedFromRestriction_lbl" xml:lang="en-US" id="id_2591691_1196700_3_1"> Increase decrease in cash deposits released from restriction. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_IncreaseDecreaseInCashDepositsReleasedFromRestriction_lbl" xml:lang="en-US" id="id_2591691_1196700_1_1"> Increase Decrease In Cash Deposits Released From Restriction </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_IncreaseDecreaseInCashDepositsReleasedFromRestriction_lbl" xml:lang="en-US" id="id_2591691_1196700_2_1"> Deposits released from restriction (restricted cash deposits) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_IncreaseDecreaseInCashDepositsReleasedFromRestriction" xlink:to="onvo_IncreaseDecreaseInCashDepositsReleasedFromRestriction_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredRevenue" xlink:label="us-gaap_IncreaseDecreaseInDeferredRevenue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInDeferredRevenue_lbl" xml:lang="en-US" id="id_2591691_938117_1_1"> Increase Decrease In Deferred Revenue </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInDeferredRevenue_lbl" xml:lang="en-US" id="id_2591691_938117_2_1"> Deferred revenue </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDeferredRevenue" xlink:to="us-gaap_IncreaseDecreaseInDeferredRevenue_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_IncreaseDecreaseInGrantsReceivable" xlink:label="onvo_IncreaseDecreaseInGrantsReceivable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_IncreaseDecreaseInGrantsReceivable_lbl" xml:lang="en-US" id="id_2591691_1191842_3_1"> Increase decrease in grants receivable. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_IncreaseDecreaseInGrantsReceivable_lbl" xml:lang="en-US" id="id_2591691_1191842_1_1"> Increase Decrease In Grants Receivable </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="onvo_IncreaseDecreaseInGrantsReceivable_lbl" xml:lang="en-US" id="id_2591691_1191842_14_1"> Grants receivable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_IncreaseDecreaseInGrantsReceivable" xlink:to="onvo_IncreaseDecreaseInGrantsReceivable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="us-gaap_IncreaseDecreaseInInventories"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl" xml:lang="en-US" id="id_2591691_935750_1_1"> Increase Decrease In Inventories </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl" xml:lang="en-US" id="id_2591691_935750_14_1"> Inventory </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInInventories" xlink:to="us-gaap_IncreaseDecreaseInInventories_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US" id="id_2591691_924543_1_1"> Increase Decrease In Operating Capital [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US" id="id_2591691_924543_2_1"> Increase (decrease) in cash resulting from changes in: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xml:lang="en-US" id="id_2591691_933216_1_1"> Increase Decrease In Prepaid Deferred Expense And Other Assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xml:lang="en-US" id="id_2591691_933216_14_1"> Prepaid expenses and other assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:to="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_InitialPaymentForResearchAndDevelopmentServicesAgreement" xlink:label="onvo_InitialPaymentForResearchAndDevelopmentServicesAgreement"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_InitialPaymentForResearchAndDevelopmentServicesAgreement_lbl" xml:lang="en-US" id="id_2591691_1191843_3_1"> Initial payment for research and development services agreement. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_InitialPaymentForResearchAndDevelopmentServicesAgreement_lbl" xml:lang="en-US" id="id_2591691_1191843_1_1"> Initial Payment For Research And Development Services Agreement </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_InitialPaymentForResearchAndDevelopmentServicesAgreement_lbl" xml:lang="en-US" id="id_2591691_1191843_2_1"> Initial payment to the Company from Agreement </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_InitialPaymentForResearchAndDevelopmentServicesAgreement" xlink:to="onvo_InitialPaymentForResearchAndDevelopmentServicesAgreement_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_InterestAccruedOnConvertibleNotesPayable" xlink:label="onvo_InterestAccruedOnConvertibleNotesPayable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_InterestAccruedOnConvertibleNotesPayable_lbl" xml:lang="en-US" id="id_2591691_1191845_3_1"> Interest accrued on convertible notes payable. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_InterestAccruedOnConvertibleNotesPayable_lbl" xml:lang="en-US" id="id_2591691_1191845_1_1"> Interest Accrued On Convertible Notes Payable </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_InterestAccruedOnConvertibleNotesPayable_lbl" xml:lang="en-US" id="id_2591691_1191845_2_1"> Interest accrued on convertible notes payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_InterestAccruedOnConvertibleNotesPayable" xlink:to="onvo_InterestAccruedOnConvertibleNotesPayable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpense_lbl" xml:lang="en-US" id="id_2591691_938923_1_1"> Interest Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestExpense_lbl" xml:lang="en-US" id="id_2591691_938923_2_1"> Interest Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_InterestExpense_lbl" xml:lang="en-US" id="id_2591691_938923_14_1"> Interest expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestPaid" xlink:label="us-gaap_InterestPaid"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPaid_lbl" xml:lang="en-US" id="id_2591691_935259_1_1"> Interest Paid </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestPaid_lbl" xml:lang="en-US" id="id_2591691_935259_2_1"> Interest </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaid" xlink:to="us-gaap_InterestPaid_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InventoryNet" xlink:label="us-gaap_InventoryNet"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryNet_lbl" xml:lang="en-US" id="id_2591691_938714_1_1"> Inventory Net </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InventoryNet_lbl" xml:lang="en-US" id="id_2591691_938714_2_1"> Inventory </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryNet" xlink:to="us-gaap_InventoryNet_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InventoryPolicyTextBlock" xlink:label="us-gaap_InventoryPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_928546_1_1"> Inventory Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InventoryPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_928546_2_1"> Inventory </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryPolicyTextBlock" xlink:to="us-gaap_InventoryPolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InventoryRawMaterials" xlink:label="us-gaap_InventoryRawMaterials"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryRawMaterials_lbl" xml:lang="en-US" id="id_2591691_938320_1_1"> Inventory Raw Materials </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InventoryRawMaterials_lbl" xml:lang="en-US" id="id_2591691_938320_2_1"> Inventory of raw materials </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryRawMaterials" xlink:to="us-gaap_InventoryRawMaterials_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InventoryValuationReserves" xlink:label="us-gaap_InventoryValuationReserves"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InventoryValuationReserves_lbl" xml:lang="en-US" id="id_2591691_935813_1_1"> Inventory Valuation Reserves </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InventoryValuationReserves_lbl" xml:lang="en-US" id="id_2591691_935813_2_1"> Obsolete inventory reserve </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryValuationReserves" xlink:to="us-gaap_InventoryValuationReserves_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="us-gaap_InvestmentIncomeInterest"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentIncomeInterest_lbl" xml:lang="en-US" id="id_2591691_934440_1_1"> Investment Income Interest </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InvestmentIncomeInterest_lbl" xml:lang="en-US" id="id_2591691_934440_2_1"> Interest income </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentIncomeInterest" xlink:to="us-gaap_InvestmentIncomeInterest_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_IssuanceOfCommonStockInConnectionWithMerger" xlink:label="onvo_IssuanceOfCommonStockInConnectionWithMerger"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_IssuanceOfCommonStockInConnectionWithMerger_lbl" xml:lang="en-US" id="id_2591691_1191846_3_1"> Issuance of common stock in connection with merger. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_IssuanceOfCommonStockInConnectionWithMerger_lbl" xml:lang="en-US" id="id_2591691_1191846_1_1"> Issuance Of Common Stock In Connection With Merger </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_IssuanceOfCommonStockInConnectionWithMerger_lbl" xml:lang="en-US" id="id_2591691_1191846_2_1"> Issuance of Common stock in connection with the merger </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_IssuanceOfCommonStockInConnectionWithMerger" xlink:to="onvo_IssuanceOfCommonStockInConnectionWithMerger_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_IssuanceOfCommonStockInConnectionWithMergerShares" xlink:label="onvo_IssuanceOfCommonStockInConnectionWithMergerShares"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_IssuanceOfCommonStockInConnectionWithMergerShares_lbl" xml:lang="en-US" id="id_2591691_1191847_3_1"> Issuance of common stock in connection with merger shares. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_IssuanceOfCommonStockInConnectionWithMergerShares_lbl" xml:lang="en-US" id="id_2591691_1191847_1_1"> Issuance Of Common Stock In Connection With Merger Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_IssuanceOfCommonStockInConnectionWithMergerShares_lbl" xml:lang="en-US" id="id_2591691_1191847_2_1"> Issuance of Common stock in connection with the merger, Shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_IssuanceOfCommonStockInConnectionWithMergerShares" xlink:to="onvo_IssuanceOfCommonStockInConnectionWithMergerShares_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMerger" xlink:label="onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMerger"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMerger_lbl" xml:lang="en-US" id="id_2591691_1191848_3_1"> Issuance of common stock through conversion of notes payable and accrued interest in connection with merger. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMerger_lbl" xml:lang="en-US" id="id_2591691_1191848_1_1"> Issuance Of Common Stock Through Conversion Of Notes Payable And Accrued Interest In Connection With Merger </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMerger_lbl" xml:lang="en-US" id="id_2591691_1191848_2_1"> Issuance of Common stock through conversion of notes payable and accrued interest in connection with the merger </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMerger" xlink:to="onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMerger_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMergerShares" xlink:label="onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMergerShares"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMergerShares_lbl" xml:lang="en-US" id="id_2591691_1191849_3_1"> Issuance of common stock through conversion of notes payable and accrued interest in connection with merger shares. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMergerShares_lbl" xml:lang="en-US" id="id_2591691_1191849_1_1"> Issuance Of Common Stock Through Conversion Of Notes Payable And Accrued Interest In Connection With Merger Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMergerShares_lbl" xml:lang="en-US" id="id_2591691_1191849_2_1"> Issuance of Common stock through conversion of notes payable and accrued interest in connection with the merger, Shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMergerShares" xlink:to="onvo_IssuanceOfCommonStockThroughConversionOfNotesPayableAndAccruedInterestInConnectionWithMergerShares_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMerger" xlink:label="onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMerger"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMerger_lbl" xml:lang="en-US" id="id_2591691_1191850_3_1"> Issuance of common stock through private placements in connection with reverse merger. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMerger_lbl" xml:lang="en-US" id="id_2591691_1191850_1_1"> Issuance Of Common Stock Through Private Placements In Connection With Merger </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMerger_lbl" xml:lang="en-US" id="id_2591691_1191850_2_1"> Issuance of Common stock through private placements in connection with the merger </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMerger" xlink:to="onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMerger_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMergerShares" xlink:label="onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMergerShares"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMergerShares_lbl" xml:lang="en-US" id="id_2591691_1191851_3_1"> Issuance of common stock through private placements in connection with merger, shares. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMergerShares_lbl" xml:lang="en-US" id="id_2591691_1191851_1_1"> Issuance Of Common Stock Through Private Placements In Connection With Merger Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMergerShares_lbl" xml:lang="en-US" id="id_2591691_1191851_2_1"> Issuance of Common stock through private placements in connection with the merger, Shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMergerShares" xlink:to="onvo_IssuanceOfCommonStockThroughPrivatePlacementsInConnectionWithMergerShares_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_IssuanceOfCommonStockToNoteHoldersShares" xlink:label="onvo_IssuanceOfCommonStockToNoteHoldersShares"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_IssuanceOfCommonStockToNoteHoldersShares_lbl" xml:lang="en-US" id="id_2591691_1191853_3_1"> Issuance of common stock to note holders shares. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_IssuanceOfCommonStockToNoteHoldersShares_lbl" xml:lang="en-US" id="id_2591691_1191853_1_1"> Issuance Of Common Stock To Note Holders Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_IssuanceOfCommonStockToNoteHoldersShares_lbl" xml:lang="en-US" id="id_2591691_1191853_2_1"> Issuance of common stock to note holders </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_IssuanceOfCommonStockToNoteHoldersShares" xlink:to="onvo_IssuanceOfCommonStockToNoteHoldersShares_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims" xlink:label="us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims_lbl" xml:lang="en-US" id="id_2591691_937119_1_1"> Issuance Of Stock And Warrants For Services Or Claims </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims_lbl" xml:lang="en-US" id="id_2591691_937119_2_1"> Warrants issued in connection with exchange agreement </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims" xlink:to="us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_IssuedWarrantsToPurchaseShareOfCommonStockForConsultingServicesShares" xlink:label="onvo_IssuedWarrantsToPurchaseShareOfCommonStockForConsultingServicesShares"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_IssuedWarrantsToPurchaseShareOfCommonStockForConsultingServicesShares_lbl" xml:lang="en-US" id="id_2591691_1191855_3_1"> Issued warrants to purchase share of common stock for consulting services shares. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_IssuedWarrantsToPurchaseShareOfCommonStockForConsultingServicesShares_lbl" xml:lang="en-US" id="id_2591691_1191855_1_1"> Issued Warrants To Purchase Share Of Common Stock For Consulting Services Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_IssuedWarrantsToPurchaseShareOfCommonStockForConsultingServicesShares_lbl" xml:lang="en-US" id="id_2591691_1191855_2_1"> Issued warrants to purchase share of common stock for consulting services shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_IssuedWarrantsToPurchaseShareOfCommonStockForConsultingServicesShares" xlink:to="onvo_IssuedWarrantsToPurchaseShareOfCommonStockForConsultingServicesShares_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_IssuedWarrantsToPurchaseSharesOfCommonStockOrConsultingServices" xlink:label="onvo_IssuedWarrantsToPurchaseSharesOfCommonStockOrConsultingServices"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_IssuedWarrantsToPurchaseSharesOfCommonStockOrConsultingServices_lbl" xml:lang="en-US" id="id_2591691_1196701_3_1"> Issued warrants to purchase shares of common stock or consulting services. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_IssuedWarrantsToPurchaseSharesOfCommonStockOrConsultingServices_lbl" xml:lang="en-US" id="id_2591691_1196701_1_1"> Issued Warrants To Purchase Shares Of Common Stock Or Consulting Services </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_IssuedWarrantsToPurchaseSharesOfCommonStockOrConsultingServices_lbl" xml:lang="en-US" id="id_2591691_1196701_2_1"> Issued warrants to purchase shares of common stock for consulting services </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_IssuedWarrantsToPurchaseSharesOfCommonStockOrConsultingServices" xlink:to="onvo_IssuedWarrantsToPurchaseSharesOfCommonStockOrConsultingServices_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="us-gaap_LeaseAndRentalExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeaseAndRentalExpense_lbl" xml:lang="en-US" id="id_2591691_940335_1_1"> Lease And Rental Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LeaseAndRentalExpense_lbl" xml:lang="en-US" id="id_2591691_940335_2_1"> Rent expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseAndRentalExpense" xlink:to="us-gaap_LeaseAndRentalExpense_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_LeaseTermWithOptionToExtend" xlink:label="onvo_LeaseTermWithOptionToExtend"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_LeaseTermWithOptionToExtend_lbl" xml:lang="en-US" id="id_2591691_1191857_3_1"> Lease term with an option to extend the lease at the end of the lease term. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_LeaseTermWithOptionToExtend_lbl" xml:lang="en-US" id="id_2591691_1191857_1_1"> Lease Term With Option To Extend </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_LeaseTermWithOptionToExtend_lbl" xml:lang="en-US" id="id_2591691_1191857_2_1"> Lease term with option to extend </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_LeaseTermWithOptionToExtend" xlink:to="onvo_LeaseTermWithOptionToExtend_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US" id="id_2591691_936129_1_1"> Liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US" id="id_2591691_936129_6_1"> Total liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US" id="id_2591691_935778_1_1"> Liabilities And Stockholders Equity </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US" id="id_2591691_935778_6_1"> Total Liabilities and Stockholders' Equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_2591691_924388_1_1"> Liabilities And Stockholders Equity [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_2591691_924388_2_1"> Liabilities and Stockholders' Equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" id="id_2591691_934201_1_1"> Liabilities Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" id="id_2591691_934201_6_1"> Total current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="us-gaap_LiabilitiesCurrentAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US" id="id_2591691_929787_1_1"> Liabilities Current [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US" id="id_2591691_929787_2_1"> Current Liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiquidityDisclosureTextBlock" xlink:label="us-gaap_LiquidityDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiquidityDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_925371_1_1"> Liquidity Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiquidityDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_925371_2_1"> Liquidity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiquidityDisclosureTextBlock" xlink:to="us-gaap_LiquidityDisclosureTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:label="us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_lbl" xml:lang="en-US" id="id_2591691_930521_1_1"> Long Term Purchase Commitment By Category Of Item Purchased [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_lbl" xml:lang="en-US" id="id_2591691_930521_2_1"> Category of Item Purchased [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:to="us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" xlink:label="us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_lbl" xml:lang="en-US" id="id_2591691_930767_1_1"> Long Term Purchase Commitment Category Of Item Purchased [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_lbl" xml:lang="en-US" id="id_2591691_930767_2_1"> Long-term Purchase Commitment, Category of Item Purchased [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" xlink:to="us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_LossOnInducementToExercise" xlink:label="onvo_LossOnInducementToExercise"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_LossOnInducementToExercise_lbl" xml:lang="en-US" id="id_2591691_1191866_3_1"> Loss on inducement to exercise. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_LossOnInducementToExercise_lbl" xml:lang="en-US" id="id_2591691_1191866_1_1"> Loss On Inducement To Exercise </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_LossOnInducementToExercise_lbl" xml:lang="en-US" id="id_2591691_1191866_2_1"> Loss on inducement to exercise warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="onvo_LossOnInducementToExercise_lbl" xml:lang="en-US" id="id_2591691_1191866_14_1"> Loss on inducement to exercise warrants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_LossOnInducementToExercise" xlink:to="onvo_LossOnInducementToExercise_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_MaximumExtendedPeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees" xlink:label="onvo_MaximumExtendedPeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_MaximumExtendedPeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees_lbl" xml:lang="en-US" id="id_2591691_1200718_3_1"> Maximum extended period remaining months for expected payment of research and development fees. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_MaximumExtendedPeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees_lbl" xml:lang="en-US" id="id_2591691_1200718_1_1"> Maximum Extended Period Remaining Months For Expected Payment Of Research And Development Fees </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_MaximumExtendedPeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees_lbl" xml:lang="en-US" id="id_2591691_1200718_2_1"> Maximum amendment extended period remaining for payment of additional research and development services </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_MaximumExtendedPeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees" xlink:to="onvo_MaximumExtendedPeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaximumMember" xlink:label="us-gaap_MaximumMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MaximumMember_lbl" xml:lang="en-US" id="id_2591691_923140_1_1"> Maximum [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MaximumMember_lbl" xml:lang="en-US" id="id_2591691_923140_2_1"> Maximum [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MaximumMember" xlink:to="us-gaap_MaximumMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_MergerTransitionMember" xlink:label="onvo_MergerTransitionMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_MergerTransitionMember_lbl" xml:lang="en-US" id="id_2591691_1191867_3_1"> Merger transition. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_MergerTransitionMember_lbl" xml:lang="en-US" id="id_2591691_1191867_1_1"> Merger Transition [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_MergerTransitionMember_lbl" xml:lang="en-US" id="id_2591691_1191867_2_1"> Merger transition [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_MergerTransitionMember" xlink:to="onvo_MergerTransitionMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinimumMember" xlink:label="us-gaap_MinimumMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinimumMember_lbl" xml:lang="en-US" id="id_2591691_932953_1_1"> Minimum [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MinimumMember_lbl" xml:lang="en-US" id="id_2591691_932953_2_1"> Minimum [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinimumMember" xlink:to="us-gaap_MinimumMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_NatureOfOperationsAndBasisOfPresentationPolicyTextBlock" xlink:label="onvo_NatureOfOperationsAndBasisOfPresentationPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_NatureOfOperationsAndBasisOfPresentationPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_988255_3_1"> Nature of operations and basis of presentation. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_NatureOfOperationsAndBasisOfPresentationPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_988255_1_1"> Nature Of Operations And Basis Of Presentation Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_NatureOfOperationsAndBasisOfPresentationPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_988255_2_1"> Nature of Operations and Basis of Presentation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_NatureOfOperationsAndBasisOfPresentationPolicyTextBlock" xlink:to="onvo_NatureOfOperationsAndBasisOfPresentationPolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US" id="id_2591691_937453_1_1"> Net Cash Provided By Used In Financing Activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US" id="id_2591691_937453_6_1"> Net cash provided by financing activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2591691_924600_1_1"> Net Cash Provided By Used In Financing Activities [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2591691_924600_2_1"> Cash Flows From Financing Activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US" id="id_2591691_939292_1_1"> Net Cash Provided By Used In Investing Activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US" id="id_2591691_939292_6_1"> Net cash used in investing activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2591691_924425_1_1"> Net Cash Provided By Used In Investing Activities [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2591691_924425_2_1"> Cash Flows From Investing Activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US" id="id_2591691_928832_1_1"> Net Cash Provided By Used In Operating Activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US" id="id_2591691_928832_2_1"> Cash flow from operations </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US" id="id_2591691_928832_6_1"> Net cash used in operating activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2591691_930909_1_1"> Net Cash Provided By Used In Operating Activities [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="id_2591691_930909_2_1"> Cash Flows From Operating Activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_NhlbiMember" xlink:label="onvo_NhlbiMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_NhlbiMember_lbl" xml:lang="en-US" id="id_2591691_1191868_3_1"> NHLBI. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_NhlbiMember_lbl" xml:lang="en-US" id="id_2591691_1191868_1_1"> Nhlbi [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_NhlbiMember_lbl" xml:lang="en-US" id="id_2591691_1191868_2_1"> NHLBI [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_NhlbiMember" xlink:to="onvo_NhlbiMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncashOrPartNoncashAcquisitionNameDomain" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionNameDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionNameDomain_lbl" xml:lang="en-US" id="id_2591691_924000_1_1"> Noncash Or Part Noncash Acquisition Name [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionNameDomain_lbl" xml:lang="en-US" id="id_2591691_924000_2_1"> Noncash or Part Noncash Acquisition, Name [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncashOrPartNoncashAcquisitionNameDomain" xlink:to="us-gaap_NoncashOrPartNoncashAcquisitionNameDomain_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1_lbl" xml:lang="en-US" id="id_2591691_929921_1_1"> Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued 1 </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1_lbl" xml:lang="en-US" id="id_2591691_929921_2_1"> Convertible notes converted into shares of common stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1" xlink:to="us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncashOrPartNoncashAcquisitionsByUniqueDescriptionAxis" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionsByUniqueDescriptionAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionsByUniqueDescriptionAxis_lbl" xml:lang="en-US" id="id_2591691_928931_1_1"> Noncash Or Part Noncash Acquisitions By Unique Description [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionsByUniqueDescriptionAxis_lbl" xml:lang="en-US" id="id_2591691_928931_2_1"> Noncash or Part Noncash Acquisitions by Unique Description [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncashOrPartNoncashAcquisitionsByUniqueDescriptionAxis" xlink:to="us-gaap_NoncashOrPartNoncashAcquisitionsByUniqueDescriptionAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="us-gaap_NonoperatingIncomeExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xml:lang="en-US" id="id_2591691_935626_1_1"> Nonoperating Income Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xml:lang="en-US" id="id_2591691_935626_6_1"> Total Other Income (Expense) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpense" xlink:to="us-gaap_NonoperatingIncomeExpense_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US" id="id_2591691_927496_1_1"> Nonoperating Income Expense [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US" id="id_2591691_927496_2_1"> Other Income (Expense) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpenseAbstract" xlink:to="us-gaap_NonoperatingIncomeExpenseAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_NumberOfAgreementWithConsultantsForServices" xlink:label="onvo_NumberOfAgreementWithConsultantsForServices"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_NumberOfAgreementWithConsultantsForServices_lbl" xml:lang="en-US" id="id_2591691_1200720_3_1"> Number of agreement with consultants for services. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_NumberOfAgreementWithConsultantsForServices_lbl" xml:lang="en-US" id="id_2591691_1200720_1_1"> Number Of Agreement With Consultants For Services </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_NumberOfAgreementWithConsultantsForServices_lbl" xml:lang="en-US" id="id_2591691_1200720_2_1"> Number of agreement with consultants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_NumberOfAgreementWithConsultantsForServices" xlink:to="onvo_NumberOfAgreementWithConsultantsForServices_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_NumberOfGrantsIssued" xlink:label="onvo_NumberOfGrantsIssued"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_NumberOfGrantsIssued_lbl" xml:lang="en-US" id="id_2591691_1203009_3_1"> Number of grants. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_NumberOfGrantsIssued_lbl" xml:lang="en-US" id="id_2591691_1203009_1_1"> Number Of Grants Issued </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_NumberOfGrantsIssued_lbl" xml:lang="en-US" id="id_2591691_1203009_2_1"> Number of grants issued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_NumberOfGrantsIssued" xlink:to="onvo_NumberOfGrantsIssued_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_NumberOfOfferingsUnderPrivatePlacementReverseMerger" xlink:label="onvo_NumberOfOfferingsUnderPrivatePlacementReverseMerger"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_NumberOfOfferingsUnderPrivatePlacementReverseMerger_lbl" xml:lang="en-US" id="id_2591691_1198165_3_1"> Number of offerings under private placement reverse merger. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_NumberOfOfferingsUnderPrivatePlacementReverseMerger_lbl" xml:lang="en-US" id="id_2591691_1198165_1_1"> Number Of Offerings Under Private Placement Reverse Merger </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_NumberOfOfferingsUnderPrivatePlacementReverseMerger_lbl" xml:lang="en-US" id="id_2591691_1198165_2_1"> Number of offerings under private placement reverse merger </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_NumberOfOfferingsUnderPrivatePlacementReverseMerger" xlink:to="onvo_NumberOfOfferingsUnderPrivatePlacementReverseMerger_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_NumberOfPrivatePlacementTransactions" xlink:label="onvo_NumberOfPrivatePlacementTransactions"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_NumberOfPrivatePlacementTransactions_lbl" xml:lang="en-US" id="id_2591691_1191870_3_1"> Number of private placement transactions. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_NumberOfPrivatePlacementTransactions_lbl" xml:lang="en-US" id="id_2591691_1191870_1_1"> Number Of Private Placement Transactions </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_NumberOfPrivatePlacementTransactions_lbl" xml:lang="en-US" id="id_2591691_1191870_2_1"> Number of private placement transactions </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_NumberOfPrivatePlacementTransactions" xlink:to="onvo_NumberOfPrivatePlacementTransactions_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_NumberOfSharesToBeExchangedForAmendedOutstandingWarrants" xlink:label="onvo_NumberOfSharesToBeExchangedForAmendedOutstandingWarrants"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_NumberOfSharesToBeExchangedForAmendedOutstandingWarrants_lbl" xml:lang="en-US" id="id_2591691_1191871_3_1"> Number of shares to be exchanged for amended outstanding warrants. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_NumberOfSharesToBeExchangedForAmendedOutstandingWarrants_lbl" xml:lang="en-US" id="id_2591691_1191871_1_1"> Number Of Shares To Be Exchanged For Amended Outstanding Warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_NumberOfSharesToBeExchangedForAmendedOutstandingWarrants_lbl" xml:lang="en-US" id="id_2591691_1191871_2_1"> Outstanding warrants to purchase </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_NumberOfSharesToBeExchangedForAmendedOutstandingWarrants" xlink:to="onvo_NumberOfSharesToBeExchangedForAmendedOutstandingWarrants_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_NumberOfWarrantExercisedDuringPeriodRecordedAsDerivativeLiability" xlink:label="onvo_NumberOfWarrantExercisedDuringPeriodRecordedAsDerivativeLiability"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_NumberOfWarrantExercisedDuringPeriodRecordedAsDerivativeLiability_lbl" xml:lang="en-US" id="id_2591691_1200724_3_1"> Number of warrant exercised during period recorded as derivative liability. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_NumberOfWarrantExercisedDuringPeriodRecordedAsDerivativeLiability_lbl" xml:lang="en-US" id="id_2591691_1200724_1_1"> Number Of Warrant Exercised During Period Recorded As Derivative Liability </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_NumberOfWarrantExercisedDuringPeriodRecordedAsDerivativeLiability_lbl" xml:lang="en-US" id="id_2591691_1200724_2_1"> Number of warrant exercised during period recorded as derivative liability </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_NumberOfWarrantExercisedDuringPeriodRecordedAsDerivativeLiability" xlink:to="onvo_NumberOfWarrantExercisedDuringPeriodRecordedAsDerivativeLiability_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_NumberOfWarrantsExercised" xlink:label="onvo_NumberOfWarrantsExercised"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_NumberOfWarrantsExercised_lbl" xml:lang="en-US" id="id_2591691_954081_3_1"> Number of warrants exercised. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_NumberOfWarrantsExercised_lbl" xml:lang="en-US" id="id_2591691_954081_1_1"> Number Of Warrants Exercised </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_NumberOfWarrantsExercised_lbl" xml:lang="en-US" id="id_2591691_954081_2_1"> Number of warrant exercised </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_NumberOfWarrantsExercised" xlink:to="onvo_NumberOfWarrantsExercised_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US" id="id_2591691_934856_1_1"> Operating Income Loss </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US" id="id_2591691_934856_6_1"> Loss from Operations </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue_lbl" xml:lang="en-US" id="id_2591691_933732_1_1"> Operating Leases Future Minimum Payments Due </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue_lbl" xml:lang="en-US" id="id_2591691_933732_6_1"> Total </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDue_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_lbl" xml:lang="en-US" id="id_2591691_936689_1_1"> Operating Leases Future Minimum Payments Due Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_lbl" xml:lang="en-US" id="id_2591691_936689_2_1"> Base rent under the lease </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFive" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFive"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFive_lbl" xml:lang="en-US" id="id_2591691_935203_1_1"> Operating Leases Future Minimum Payments Due In Rolling Year Five </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFive_lbl" xml:lang="en-US" id="id_2591691_935203_2_1"> Fiscal year ended March 31, 2018 </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFive" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFive_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFour" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFour"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFour_lbl" xml:lang="en-US" id="id_2591691_935420_1_1"> Operating Leases Future Minimum Payments Due In Rolling Year Four </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFour_lbl" xml:lang="en-US" id="id_2591691_935420_2_1"> Fiscal year ended March 31, 2017 </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFour" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFour_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearThree" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearThree"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearThree_lbl" xml:lang="en-US" id="id_2591691_934292_1_1"> Operating Leases Future Minimum Payments Due In Rolling Year Three </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearThree_lbl" xml:lang="en-US" id="id_2591691_934292_2_1"> Fiscal year ended March 31, 2016 </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearThree" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearThree_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearTwo" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearTwo"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearTwo_lbl" xml:lang="en-US" id="id_2591691_935427_1_1"> Operating Leases Future Minimum Payments Due In Rolling Year Two </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearTwo_lbl" xml:lang="en-US" id="id_2591691_935427_2_1"> Fiscal year ended March 31, 2015 </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearTwo" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearTwo_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsNextRollingTwelveMonths" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsNextRollingTwelveMonths"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsNextRollingTwelveMonths_lbl" xml:lang="en-US" id="id_2591691_933663_1_1"> Operating Leases Future Minimum Payments Next Rolling Twelve Months </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsNextRollingTwelveMonths_lbl" xml:lang="en-US" id="id_2591691_933663_2_1"> Fiscal year ended March 31, 2014 </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsNextRollingTwelveMonths" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsNextRollingTwelveMonths_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesOfLesseeContingentRentalsBasisSpreadOnVariableRate" xlink:label="us-gaap_OperatingLeasesOfLesseeContingentRentalsBasisSpreadOnVariableRate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesOfLesseeContingentRentalsBasisSpreadOnVariableRate_lbl" xml:lang="en-US" id="id_2591691_926609_1_1"> Operating Leases Of Lessee Contingent Rentals Basis Spread On Variable Rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeasesOfLesseeContingentRentalsBasisSpreadOnVariableRate_lbl" xml:lang="en-US" id="id_2591691_926609_2_1"> Base rent escalators </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesOfLesseeContingentRentalsBasisSpreadOnVariableRate" xlink:to="us-gaap_OperatingLeasesOfLesseeContingentRentalsBasisSpreadOnVariableRate_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock" xlink:label="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock_lbl" xml:lang="en-US" id="id_2591691_933024_1_1"> Organization Consolidation Basis Of Presentation Business Description And Accounting Policies [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock_lbl" xml:lang="en-US" id="id_2591691_933024_2_1"> Description of Business and Summary of Significant Accounting Policies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock" xlink:to="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="us-gaap_OtherAssetsNoncurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US" id="id_2591691_937594_1_1"> Other Assets Noncurrent </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US" id="id_2591691_937594_2_1"> Other Assets - Net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="us-gaap_OtherNonoperatingIncomeExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xml:lang="en-US" id="id_2591691_934087_1_1"> Other Nonoperating Income Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xml:lang="en-US" id="id_2591691_934087_2_1"> Other income (expense) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_OtherNonoperatingIncomeExpense_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_OtherPlanMember" xlink:label="onvo_OtherPlanMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_OtherPlanMember_lbl" xml:lang="en-US" id="id_2591691_1191874_3_1"> Other plan. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_OtherPlanMember_lbl" xml:lang="en-US" id="id_2591691_1191874_1_1"> Other Plan [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_OtherPlanMember_lbl" xml:lang="en-US" id="id_2591691_1191874_2_1"> Other Plan [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_OtherPlanMember" xlink:to="onvo_OtherPlanMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_OutstandingPrincipalAssumedOnAcquisitionMember" xlink:label="onvo_OutstandingPrincipalAssumedOnAcquisitionMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_OutstandingPrincipalAssumedOnAcquisitionMember_lbl" xml:lang="en-US" id="id_2591691_1191876_3_1"> Outstanding principal assumed on acquisition. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_OutstandingPrincipalAssumedOnAcquisitionMember_lbl" xml:lang="en-US" id="id_2591691_1191876_1_1"> Outstanding Principal Assumed On Acquisition [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_OutstandingPrincipalAssumedOnAcquisitionMember_lbl" xml:lang="en-US" id="id_2591691_1191876_2_1"> Outstanding Principal Assumed On Acquisition [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_OutstandingPrincipalAssumedOnAcquisitionMember" xlink:to="onvo_OutstandingPrincipalAssumedOnAcquisitionMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_OverAllotmentOptionMember" xlink:label="onvo_OverAllotmentOptionMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_OverAllotmentOptionMember_lbl" xml:lang="en-US" id="id_2591691_1100168_3_1"> Over Allotment Option [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_OverAllotmentOptionMember_lbl" xml:lang="en-US" id="id_2591691_1100168_1_1"> Over Allotment Option [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_OverAllotmentOptionMember_lbl" xml:lang="en-US" id="id_2591691_1100168_2_1"> Over Allotment Option Exercised [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_OverAllotmentOptionMember" xlink:to="onvo_OverAllotmentOptionMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_PaymentForExpenseOnWarrantModification" xlink:label="onvo_PaymentForExpenseOnWarrantModification"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_PaymentForExpenseOnWarrantModification_lbl" xml:lang="en-US" id="id_2591691_1191877_3_1"> Payment for expense on warrant modification. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_PaymentForExpenseOnWarrantModification_lbl" xml:lang="en-US" id="id_2591691_1191877_1_1"> Payment For Expense On Warrant Modification </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_PaymentForExpenseOnWarrantModification_lbl" xml:lang="en-US" id="id_2591691_1191877_2_1"> Expense associated with warrant modification </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_PaymentForExpenseOnWarrantModification" xlink:to="onvo_PaymentForExpenseOnWarrantModification_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="us-gaap_PaymentsOfFinancingCosts"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xml:lang="en-US" id="id_2591691_933358_1_1"> Payments Of Financing Costs </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xml:lang="en-US" id="id_2591691_933358_14_1"> Deferred financing costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfFinancingCosts" xlink:to="us-gaap_PaymentsOfFinancingCosts_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquireIntangibleAssets" xlink:label="us-gaap_PaymentsToAcquireIntangibleAssets"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireIntangibleAssets_lbl" xml:lang="en-US" id="id_2591691_934868_1_1"> Payments To Acquire Intangible Assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireIntangibleAssets_lbl" xml:lang="en-US" id="id_2591691_934868_14_1"> Purchases of intangible assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireIntangibleAssets" xlink:to="us-gaap_PaymentsToAcquireIntangibleAssets_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_2591691_936514_1_1"> Payments To Acquire Property Plant And Equipment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US" id="id_2591691_936514_14_1"> Purchases of fixed assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_PeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees" xlink:label="onvo_PeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_PeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees_lbl" xml:lang="en-US" id="id_2591691_1191879_3_1"> Period remaining months for expected payment of research and development fees. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_PeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees_lbl" xml:lang="en-US" id="id_2591691_1191879_1_1"> Period Remaining Months For Expected Payment Of Research And Development Fees </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_PeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees_lbl" xml:lang="en-US" id="id_2591691_1191879_2_1"> Remaining payments expected to occur over </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_PeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees" xlink:to="onvo_PeriodRemainingMonthsForExpectedPaymentOfResearchAndDevelopmentFees_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="us-gaap_PlanNameAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PlanNameAxis_lbl" xml:lang="en-US" id="id_2591691_930809_1_1"> Plan Name [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PlanNameAxis_lbl" xml:lang="en-US" id="id_2591691_930809_2_1"> Plan Name [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanNameAxis" xlink:to="us-gaap_PlanNameAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="us-gaap_PlanNameDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PlanNameDomain_lbl" xml:lang="en-US" id="id_2591691_931386_1_1"> Plan Name [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PlanNameDomain_lbl" xml:lang="en-US" id="id_2591691_931386_2_1"> Plan Name [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanNameDomain" xlink:to="us-gaap_PlanNameDomain_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xml:lang="en-US" id="id_2591691_939595_1_1"> Prepaid Expense And Other Assets Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xml:lang="en-US" id="id_2591691_939595_2_1"> Prepaid expenses and other current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:to="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromIssuanceInitialPublicOffering" xlink:label="us-gaap_ProceedsFromIssuanceInitialPublicOffering"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceInitialPublicOffering_lbl" xml:lang="en-US" id="id_2591691_939370_1_1"> Proceeds From Issuance Initial Public Offering </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceInitialPublicOffering_lbl" xml:lang="en-US" id="id_2591691_939370_2_1"> Proceeds from issuance of common stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceInitialPublicOffering" xlink:to="us-gaap_ProceedsFromIssuanceInitialPublicOffering_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US" id="id_2591691_938994_1_1"> Proceeds From Issuance Of Common Stock </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US" id="id_2591691_938994_2_1"> Net proceeds to company from offering </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ProceedsFromIssuanceOfCommonStockAndWarrants" xlink:label="onvo_ProceedsFromIssuanceOfCommonStockAndWarrants"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ProceedsFromIssuanceOfCommonStockAndWarrants_lbl" xml:lang="en-US" id="id_2591691_1026732_3_1"> Proceeds from issuance of common stock and warrants. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ProceedsFromIssuanceOfCommonStockAndWarrants_lbl" xml:lang="en-US" id="id_2591691_1026732_1_1"> Proceeds From Issuance Of Common Stock And Warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ProceedsFromIssuanceOfCommonStockAndWarrants_lbl" xml:lang="en-US" id="id_2591691_1026732_2_1"> Proceeds from issuance of common stock and warrants, net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ProceedsFromIssuanceOfCommonStockAndWarrants" xlink:to="onvo_ProceedsFromIssuanceOfCommonStockAndWarrants_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromIssuanceOfPrivatePlacement" xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement_lbl" xml:lang="en-US" id="id_2591691_937835_1_1"> Proceeds From Issuance Of Private Placement </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement_lbl" xml:lang="en-US" id="id_2591691_937835_2_1"> Total gross proceeds of approximately </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfPrivatePlacement" xlink:to="us-gaap_ProceedsFromIssuanceOfPrivatePlacement_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromIssuanceOfWarrants" xlink:label="us-gaap_ProceedsFromIssuanceOfWarrants"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfWarrants_lbl" xml:lang="en-US" id="id_2591691_939390_1_1"> Proceeds From Issuance Of Warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfWarrants_lbl" xml:lang="en-US" id="id_2591691_939390_2_1"> Aggregate proceeds of warrants tendered </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfWarrants_lbl" xml:lang="en-US" id="id_2591691_939390_12_1"> Issued warrants with connection with reverse merger and private placement </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfWarrants" xlink:to="us-gaap_ProceedsFromIssuanceOfWarrants_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromNotesPayable" xlink:label="us-gaap_ProceedsFromNotesPayable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromNotesPayable_lbl" xml:lang="en-US" id="id_2591691_937957_1_1"> Proceeds From Notes Payable </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromNotesPayable_lbl" xml:lang="en-US" id="id_2591691_937957_2_1"> Proceeds from issuance of convertible notes payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromNotesPayable" xlink:to="us-gaap_ProceedsFromNotesPayable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromRelatedPartyDebt" xlink:label="us-gaap_ProceedsFromRelatedPartyDebt"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromRelatedPartyDebt_lbl" xml:lang="en-US" id="id_2591691_939835_1_1"> Proceeds From Related Party Debt </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromRelatedPartyDebt_lbl" xml:lang="en-US" id="id_2591691_939835_2_1"> Proceeds from issuance of related party notes payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromRelatedPartyDebt" xlink:to="us-gaap_ProceedsFromRelatedPartyDebt_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="us-gaap_ProceedsFromStockOptionsExercised"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_lbl" xml:lang="en-US" id="id_2591691_939698_1_1"> Proceeds From Stock Options Exercised </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_lbl" xml:lang="en-US" id="id_2591691_939698_2_1"> Proceeds from exercise of stock options </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromStockOptionsExercised" xlink:to="us-gaap_ProceedsFromStockOptionsExercised_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromWarrantExercises" xlink:label="us-gaap_ProceedsFromWarrantExercises"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromWarrantExercises_lbl" xml:lang="en-US" id="id_2591691_938176_1_1"> Proceeds From Warrant Exercises </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromWarrantExercises_lbl" xml:lang="en-US" id="id_2591691_938176_2_1"> Proceeds from warrant exercise </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_ProceedsFromWarrantExercises_lbl" xml:lang="en-US" id="id_2591691_938176_14_1"> Warrant liability removal due to settlements </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromWarrantExercises" xlink:to="us-gaap_ProceedsFromWarrantExercises_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProfitLoss" xlink:label="us-gaap_ProfitLoss"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US" id="id_2591691_934491_1_1"> Profit Loss </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US" id="id_2591691_934491_2_1"> Net income (loss) </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US" id="id_2591691_934491_6_1"> Net Income (Loss) </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US" id="id_2591691_934491_12_1"> Net Loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfitLoss" xlink:to="us-gaap_ProfitLoss_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives" xlink:label="us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives_lbl" xml:lang="en-US" id="id_2591691_927780_1_1"> Property Plant And Equipment Estimated Useful Lives </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives_lbl" xml:lang="en-US" id="id_2591691_927780_2_1"> Estimated useful life of the fixed assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives" xlink:to="us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xml:lang="en-US" id="id_2591691_940861_1_1"> Property Plant And Equipment Net </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xml:lang="en-US" id="id_2591691_940861_2_1"> Fixed Assets - Net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xml:lang="en-US" id="id_2591691_928464_1_1"> Property Plant And Equipment Useful Life </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xml:lang="en-US" id="id_2591691_928464_2_1"> Useful life of fixed assets, range </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:to="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_PurchasedEquipmentThroughCapitalLease" xlink:label="onvo_PurchasedEquipmentThroughCapitalLease"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_PurchasedEquipmentThroughCapitalLease_lbl" xml:lang="en-US" id="id_2591691_1191888_3_1"> Purchased equipment through capital lease. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_PurchasedEquipmentThroughCapitalLease_lbl" xml:lang="en-US" id="id_2591691_1191888_1_1"> Purchased Equipment Through Capital Lease </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_PurchasedEquipmentThroughCapitalLease_lbl" xml:lang="en-US" id="id_2591691_1191888_2_1"> Purchased equipment through capital lease </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_PurchasedEquipmentThroughCapitalLease" xlink:to="onvo_PurchasedEquipmentThroughCapitalLease_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeAxis" xlink:label="us-gaap_RangeAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RangeAxis_lbl" xml:lang="en-US" id="id_2591691_926437_1_1"> Range [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RangeAxis_lbl" xml:lang="en-US" id="id_2591691_926437_2_1"> Range [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RangeAxis" xlink:to="us-gaap_RangeAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="us-gaap_RangeMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RangeMember_lbl" xml:lang="en-US" id="id_2591691_930818_1_1"> Range [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RangeMember_lbl" xml:lang="en-US" id="id_2591691_930818_2_1"> Range [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RangeMember" xlink:to="us-gaap_RangeMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ReceivableTypeDomain" xlink:label="us-gaap_ReceivableTypeDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ReceivableTypeDomain_lbl" xml:lang="en-US" id="id_2591691_929556_1_1"> Receivable Type [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ReceivableTypeDomain_lbl" xml:lang="en-US" id="id_2591691_929556_2_1"> Receivable [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivableTypeDomain" xlink:to="us-gaap_ReceivableTypeDomain_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_RepaymentOfConvertibleNotesAndInterestPayable" xlink:label="onvo_RepaymentOfConvertibleNotesAndInterestPayable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_RepaymentOfConvertibleNotesAndInterestPayable_lbl" xml:lang="en-US" id="id_2591691_1191892_3_1"> Repayment of convertible notes and interest payable. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_RepaymentOfConvertibleNotesAndInterestPayable_lbl" xml:lang="en-US" id="id_2591691_1191892_1_1"> Repayment Of Convertible Notes And Interest Payable </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="onvo_RepaymentOfConvertibleNotesAndInterestPayable_lbl" xml:lang="en-US" id="id_2591691_1191892_14_1"> Repayment of convertible notes and interest payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_RepaymentOfConvertibleNotesAndInterestPayable" xlink:to="onvo_RepaymentOfConvertibleNotesAndInterestPayable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations" xlink:label="us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations_lbl" xml:lang="en-US" id="id_2591691_935515_1_1"> Repayments Of Debt And Capital Lease Obligations </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations_lbl" xml:lang="en-US" id="id_2591691_935515_14_1"> Principal payments on capital lease obligation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations" xlink:to="us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepaymentsOfRelatedPartyDebt" xlink:label="us-gaap_RepaymentsOfRelatedPartyDebt"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfRelatedPartyDebt_lbl" xml:lang="en-US" id="id_2591691_935062_1_1"> Repayments Of Related Party Debt </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RepaymentsOfRelatedPartyDebt_lbl" xml:lang="en-US" id="id_2591691_935062_14_1"> Repayment of related party notes payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfRelatedPartyDebt" xlink:to="us-gaap_RepaymentsOfRelatedPartyDebt_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned" xlink:label="us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned_lbl" xml:lang="en-US" id="id_2591691_936638_1_1"> Research And Development Arrangement Contract To Perform For Others Compensation Earned </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned_lbl" xml:lang="en-US" id="id_2591691_936638_2_1"> Research and development services on a fixed-fee basis </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned" xlink:to="us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ResearchAndDevelopmentArrangementMember" xlink:label="us-gaap_ResearchAndDevelopmentArrangementMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentArrangementMember_lbl" xml:lang="en-US" id="id_2591691_931148_1_1"> Research And Development Arrangement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ResearchAndDevelopmentArrangementMember_lbl" xml:lang="en-US" id="id_2591691_931148_2_1"> Research and Development Services [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentArrangementMember" xlink:to="us-gaap_ResearchAndDevelopmentArrangementMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="us-gaap_ResearchAndDevelopmentExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US" id="id_2591691_939407_1_1"> Research And Development Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xml:lang="en-US" id="id_2591691_939407_2_1"> Research and development expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpense" xlink:to="us-gaap_ResearchAndDevelopmentExpense_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ResearchAndDevelopmentExpenseMember" xlink:label="us-gaap_ResearchAndDevelopmentExpenseMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentExpenseMember_lbl" xml:lang="en-US" id="id_2591691_928963_1_1"> Research And Development Expense [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ResearchAndDevelopmentExpenseMember_lbl" xml:lang="en-US" id="id_2591691_928963_2_1"> Research and development expense [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpenseMember" xlink:to="us-gaap_ResearchAndDevelopmentExpenseMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ResearchAndDevelopmentExpensePolicy" xlink:label="us-gaap_ResearchAndDevelopmentExpensePolicy"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ResearchAndDevelopmentExpensePolicy_lbl" xml:lang="en-US" id="id_2591691_929876_1_1"> Research And Development Expense Policy </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ResearchAndDevelopmentExpensePolicy_lbl" xml:lang="en-US" id="id_2591691_929876_2_1"> Research and Development </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpensePolicy" xlink:to="us-gaap_ResearchAndDevelopmentExpensePolicy_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ResearchAndDevelopmentServicesContractValue" xlink:label="onvo_ResearchAndDevelopmentServicesContractValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ResearchAndDevelopmentServicesContractValue_lbl" xml:lang="en-US" id="id_2591691_1191893_3_1"> Research and development services contract value. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ResearchAndDevelopmentServicesContractValue_lbl" xml:lang="en-US" id="id_2591691_1191893_1_1"> Research And Development Services Contract Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ResearchAndDevelopmentServicesContractValue_lbl" xml:lang="en-US" id="id_2591691_1191893_2_1"> Total contract value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ResearchAndDevelopmentServicesContractValue" xlink:to="onvo_ResearchAndDevelopmentServicesContractValue_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ResearchContractAgreementWithThirdParty" xlink:label="onvo_ResearchContractAgreementWithThirdParty"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ResearchContractAgreementWithThirdParty_lbl" xml:lang="en-US" id="id_2591691_1191894_3_1"> Research contract agreement with third party. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ResearchContractAgreementWithThirdParty_lbl" xml:lang="en-US" id="id_2591691_1191894_1_1"> Research Contract Agreement With Third Party </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ResearchContractAgreementWithThirdParty_lbl" xml:lang="en-US" id="id_2591691_1191894_2_1"> Term of research contract agreement with third party </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ResearchContractAgreementWithThirdParty" xlink:to="onvo_ResearchContractAgreementWithThirdParty_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:label="us-gaap_RestrictedCashAndCashEquivalents"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xml:lang="en-US" id="id_2591691_938076_1_1"> Restricted Cash And Cash Equivalents </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xml:lang="en-US" id="id_2591691_938076_2_1"> Additional restricted cash </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalents" xlink:to="us-gaap_RestrictedCashAndCashEquivalents_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_2591691_937648_1_1"> Restricted Cash And Cash Equivalents At Carrying Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US" id="id_2591691_937648_2_1"> Restricted cash </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedCashAndInvestments" xlink:label="us-gaap_RestrictedCashAndInvestments"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndInvestments_lbl" xml:lang="en-US" id="id_2591691_939828_1_1"> Restricted Cash And Investments </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedCashAndInvestments_lbl" xml:lang="en-US" id="id_2591691_939828_2_1"> Restricted Cash </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndInvestments" xlink:to="us-gaap_RestrictedCashAndInvestments_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="us-gaap_RestrictedStockMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedStockMember_lbl" xml:lang="en-US" id="id_2591691_923936_1_1"> Restricted Stock [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedStockMember_lbl" xml:lang="en-US" id="id_2591691_923936_2_1"> Restricted stock [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockMember" xlink:to="us-gaap_RestrictedStockMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="us-gaap_RestrictedStockUnitsRSUMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedStockUnitsRSUMember_lbl" xml:lang="en-US" id="id_2591691_929867_1_1"> Restricted Stock Units R S U [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedStockUnitsRSUMember_lbl" xml:lang="en-US" id="id_2591691_929867_2_1"> Restricted Stock Units (RSUs) [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockUnitsRSUMember" xlink:to="us-gaap_RestrictedStockUnitsRSUMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestructuringCosts" xlink:label="us-gaap_RestructuringCosts"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestructuringCosts_lbl" xml:lang="en-US" id="id_2591691_940564_1_1"> Restructuring Costs </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestructuringCosts_lbl" xml:lang="en-US" id="id_2591691_940564_2_1"> Cash transaction costs related to the Merger approximately </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestructuringCosts" xlink:to="us-gaap_RestructuringCosts_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="us-gaap_RetainedEarningsMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetainedEarningsMember_lbl" xml:lang="en-US" id="id_2591691_929313_1_1"> Retained Earnings [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RetainedEarningsMember_lbl" xml:lang="en-US" id="id_2591691_929313_2_1"> Deficit Accumulated During the Development Stage [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsMember" xlink:to="us-gaap_RetainedEarningsMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_RevenueFromCollaborations" xlink:label="onvo_RevenueFromCollaborations"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_RevenueFromCollaborations_lbl" xml:lang="en-US" id="id_2591691_1191895_3_1"> Revenue from collaborations. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_RevenueFromCollaborations_lbl" xml:lang="en-US" id="id_2591691_1191895_1_1"> Revenue From Collaborations </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_RevenueFromCollaborations_lbl" xml:lang="en-US" id="id_2591691_1191895_2_1"> Collaborations </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_RevenueFromCollaborations" xlink:to="onvo_RevenueFromCollaborations_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevenueFromGrants" xlink:label="us-gaap_RevenueFromGrants"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueFromGrants_lbl" xml:lang="en-US" id="id_2591691_934838_1_1"> Revenue From Grants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueFromGrants_lbl" xml:lang="en-US" id="id_2591691_934838_2_1"> Grants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromGrants" xlink:to="us-gaap_RevenueFromGrants_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_RevenueFromResearchCollaborations" xlink:label="onvo_RevenueFromResearchCollaborations"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_RevenueFromResearchCollaborations_lbl" xml:lang="en-US" id="id_2591691_1191896_3_1"> Revenue from research collaborations. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_RevenueFromResearchCollaborations_lbl" xml:lang="en-US" id="id_2591691_1191896_1_1"> Revenue From Research Collaborations </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_RevenueFromResearchCollaborations_lbl" xml:lang="en-US" id="id_2591691_1191896_2_1"> Revenue related to research contract </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_RevenueFromResearchCollaborations" xlink:to="onvo_RevenueFromResearchCollaborations_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_RevenueRecognitionGrantPolicyTextBlock" xlink:label="onvo_RevenueRecognitionGrantPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_RevenueRecognitionGrantPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_1191897_3_1"> Revenue recognition grant. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_RevenueRecognitionGrantPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_1191897_1_1"> Revenue Recognition Grant Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_RevenueRecognitionGrantPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_1191897_2_1"> NIH and U.S. Treasury Grant Revenues </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_RevenueRecognitionGrantPolicyTextBlock" xlink:to="onvo_RevenueRecognitionGrantPolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevenueRecognitionMultipleElementArrangements" xlink:label="us-gaap_RevenueRecognitionMultipleElementArrangements"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueRecognitionMultipleElementArrangements_lbl" xml:lang="en-US" id="id_2591691_923505_1_1"> Revenue Recognition Multiple Element Arrangements </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueRecognitionMultipleElementArrangements_lbl" xml:lang="en-US" id="id_2591691_923505_2_1"> Revenue Arrangements with Multiple Deliverables </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRecognitionMultipleElementArrangements" xlink:to="us-gaap_RevenueRecognitionMultipleElementArrangements_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_924259_1_1"> Revenue Recognition Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_924259_2_1"> Revenue Recognition </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRecognitionPolicyTextBlock" xlink:to="us-gaap_RevenueRecognitionPolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_RevenueRecognitionResearchAndDevelopmentRevenuePolicyTextBlock" xlink:label="onvo_RevenueRecognitionResearchAndDevelopmentRevenuePolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_RevenueRecognitionResearchAndDevelopmentRevenuePolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_1191898_3_1"> Revenue recognition research and development revenue. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_RevenueRecognitionResearchAndDevelopmentRevenuePolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_1191898_1_1"> Revenue Recognition Research And Development Revenue Policy [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_RevenueRecognitionResearchAndDevelopmentRevenuePolicyTextBlock_lbl" xml:lang="en-US" id="id_2591691_1191898_2_1"> Research and Development Revenue Under Collaborative Agreements </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_RevenueRecognitionResearchAndDevelopmentRevenuePolicyTextBlock" xlink:to="onvo_RevenueRecognitionResearchAndDevelopmentRevenuePolicyTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevenueRecognitionSalesOfGoods" xlink:label="us-gaap_RevenueRecognitionSalesOfGoods"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueRecognitionSalesOfGoods_lbl" xml:lang="en-US" id="id_2591691_923967_1_1"> Revenue Recognition Sales Of Goods </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueRecognitionSalesOfGoods_lbl" xml:lang="en-US" id="id_2591691_923967_2_1"> Product Revenue </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRecognitionSalesOfGoods" xlink:to="us-gaap_RevenueRecognitionSalesOfGoods_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US" id="id_2591691_933119_1_1"> Revenues </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US" id="id_2591691_933119_2_1"> Total revenue recognized from inception on the contract </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US" id="id_2591691_933119_6_1"> Total Revenues </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_Revenues_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="us-gaap_RevenuesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US" id="id_2591691_929243_1_1"> Revenues [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US" id="id_2591691_929243_2_1"> Revenues </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenuesAbstract" xlink:to="us-gaap_RevenuesAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RisksAndUncertaintiesAbstract" xlink:label="us-gaap_RisksAndUncertaintiesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RisksAndUncertaintiesAbstract_lbl" xml:lang="en-US" id="id_2591691_931870_1_1"> Risks And Uncertainties [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RisksAndUncertaintiesAbstract_lbl" xml:lang="en-US" id="id_2591691_931870_2_1"> Risks and Uncertainties [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RisksAndUncertaintiesAbstract" xlink:to="us-gaap_RisksAndUncertaintiesAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SaleOfStockPricePerShare" xlink:label="us-gaap_SaleOfStockPricePerShare"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SaleOfStockPricePerShare_lbl" xml:lang="en-US" id="id_2591691_932019_1_1"> Sale Of Stock Price Per Share </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SaleOfStockPricePerShare_lbl" xml:lang="en-US" id="id_2591691_932019_2_1"> Offering price per share </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockPricePerShare" xlink:to="us-gaap_SaleOfStockPricePerShare_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SalesRevenueGoodsNet" xlink:label="us-gaap_SalesRevenueGoodsNet"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SalesRevenueGoodsNet_lbl" xml:lang="en-US" id="id_2591691_933695_1_1"> Sales Revenue Goods Net </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SalesRevenueGoodsNet_lbl" xml:lang="en-US" id="id_2591691_933695_2_1"> Product </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SalesRevenueGoodsNet" xlink:to="us-gaap_SalesRevenueGoodsNet_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="us-gaap_ScenarioUnspecifiedDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScenarioUnspecifiedDomain_lbl" xml:lang="en-US" id="id_2591691_930891_1_1"> Scenario Unspecified [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScenarioUnspecifiedDomain_lbl" xml:lang="en-US" id="id_2591691_930891_2_1"> Scenario, Unspecified [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScenarioUnspecifiedDomain" xlink:to="us-gaap_ScenarioUnspecifiedDomain_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfDerivativeInstrumentsTextBlock" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_lbl" xml:lang="en-US" id="id_2591691_927035_1_1"> Schedule Of Derivative Instruments [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_lbl" xml:lang="en-US" id="id_2591691_927035_2_1"> Assumptions Used to Value Derivative Liabilities at Closing Dates of Private Placements </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock" xlink:to="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" xlink:label="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock_lbl" xml:lang="en-US" id="id_2591691_926102_1_1"> Schedule Of Future Minimum Rental Payments For Operating Leases Table [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock_lbl" xml:lang="en-US" id="id_2591691_926102_2_1"> Future Minimum Rental Payments Required Under Operating Leases That Have Initial or Remaining Non-Cancellable Lease Terms in Excess of One Year </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" xlink:to="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xml:lang="en-US" id="id_2591691_930578_1_1"> Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xml:lang="en-US" id="id_2591691_930578_2_1"> Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock_lbl" xml:lang="en-US" id="id_2591691_923393_1_1"> Schedule Of Share Based Compensation Restricted Stock Units Award Activity Table [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock_lbl" xml:lang="en-US" id="id_2591691_923393_2_1"> Summary of Company's Restricted Stock Award Activity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xml:lang="en-US" id="id_2591691_924843_1_1"> Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xml:lang="en-US" id="id_2591691_924843_2_1"> Summary of Stock Option Activity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock_lbl" xml:lang="en-US" id="id_2591691_926594_1_1"> Schedule Of Share Based Payment Award Employee Stock Purchase Plan Valuation Assumptions Table [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock_lbl" xml:lang="en-US" id="id_2591691_926594_2_1"> Fair Value of Employee Stock Options </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ScheduleOfSignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareTable" xlink:label="onvo_ScheduleOfSignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ScheduleOfSignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareTable_lbl" xml:lang="en-US" id="id_2591691_1191906_3_1"> Schedule of significant accounting policies related to business acquisition revenue recognition and earnings per share. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ScheduleOfSignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareTable_lbl" xml:lang="en-US" id="id_2591691_1191906_1_1"> Schedule Of Significant Accounting Policies Related To Business Acquisition Revenue Recognition And Earnings Per Share [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ScheduleOfSignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareTable_lbl" xml:lang="en-US" id="id_2591691_1191906_2_1"> Schedule Of Significant Accounting Policies Related To Business Acquisition Revenue Recognition And Earnings Per Share [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ScheduleOfSignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareTable" xlink:to="onvo_ScheduleOfSignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareTable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfStockByClassTable" xlink:label="us-gaap_ScheduleOfStockByClassTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xml:lang="en-US" id="id_2591691_929898_1_1"> Schedule Of Stock By Class [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xml:lang="en-US" id="id_2591691_929898_2_1"> Schedule of Stock by Class [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfStockByClassTable" xlink:to="us-gaap_ScheduleOfStockByClassTable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_lbl" xml:lang="en-US" id="id_2591691_924972_1_1"> Schedule Of Stockholders Equity Note Warrants Or Rights [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_lbl" xml:lang="en-US" id="id_2591691_924972_2_1"> Summary of Warrant Activity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" xlink:to="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_lbl" xml:lang="en-US" id="id_2591691_940817_1_1"> Selling General And Administrative Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_lbl" xml:lang="en-US" id="id_2591691_940817_2_1"> Selling, general, and administrative expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SellingGeneralAndAdministrativeExpense" xlink:to="us-gaap_SellingGeneralAndAdministrativeExpense_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US" id="id_2591691_938471_1_1"> Share Based Compensation </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US" id="id_2591691_938471_2_1"> Stock-based compensation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights_lbl" xml:lang="en-US" id="id_2591691_925350_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Rights </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights_lbl" xml:lang="en-US" id="id_2591691_925350_2_1"> Restricted stock vesting conditions </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedAndExpirationsInPeriod" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedAndExpirationsInPeriod"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedAndExpirationsInPeriod_lbl" xml:lang="en-US" id="id_2591691_1191907_3_1"> Share based compensation arrangement by share based payment award equity instruments other than options forfeited and expirations in period. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedAndExpirationsInPeriod_lbl" xml:lang="en-US" id="id_2591691_1191907_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited And Expirations In Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedAndExpirationsInPeriod_lbl" xml:lang="en-US" id="id_2591691_1191907_2_1"> Restricted stock cancelled </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedAndExpirationsInPeriod_lbl" xml:lang="en-US" id="id_2591691_1191907_14_1"> Canceled / forfeited, Number of Shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedAndExpirationsInPeriod" xlink:to="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedAndExpirationsInPeriod_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xml:lang="en-US" id="id_2591691_923430_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xml:lang="en-US" id="id_2591691_923430_2_1"> Granted, Number of Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xml:lang="en-US" id="id_2591691_923430_12_1"> Issuance restricted Common stock to certain employees, advisors and consultants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US" id="id_2591691_925843_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US" id="id_2591691_925843_4_1"> Ending balance, Unvested, Number of Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US" id="id_2591691_925843_5_1"> Beginning balance, Unvested, Number of Shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xml:lang="en-US" id="id_2591691_932444_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xml:lang="en-US" id="id_2591691_932444_2_1"> Restricted stock units vested during the period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xml:lang="en-US" id="id_2591691_932444_14_1"> Vested, Number of Shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate_lbl" xml:lang="en-US" id="id_2591691_930017_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Expiration Date </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate_lbl" xml:lang="en-US" id="id_2591691_930017_2_1"> Termination date of Equity Incentive Plan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_lbl" xml:lang="en-US" id="id_2591691_926550_1_1"> Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_lbl" xml:lang="en-US" id="id_2591691_926550_2_1"> Termination date of Equity Incentive Plan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xml:lang="en-US" id="id_2591691_928648_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xml:lang="en-US" id="id_2591691_928648_2_1"> Dividend yield </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xml:lang="en-US" id="id_2591691_926378_1_1"> Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term 1 </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xml:lang="en-US" id="id_2591691_926378_2_1"> Expected life of options </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US" id="id_2591691_925061_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US" id="id_2591691_925061_2_1"> Volatility </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xml:lang="en-US" id="id_2591691_925061_12_1"> Volatility rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US" id="id_2591691_924177_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US" id="id_2591691_924177_2_1"> Risk free factor </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xml:lang="en-US" id="id_2591691_924177_12_1"> Risk-free interest rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xml:lang="en-US" id="id_2591691_926498_1_1"> Share Based Compensation Arrangement By Share Based Payment Award [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xml:lang="en-US" id="id_2591691_926498_2_1"> Share-based Compensation Arrangement by Share-based Payment Award [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures_lbl" xml:lang="en-US" id="id_2591691_925171_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Forfeitures </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures_lbl" xml:lang="en-US" id="id_2591691_925171_2_1"> Restricted stock cancelled </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xml:lang="en-US" id="id_2591691_929330_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xml:lang="en-US" id="id_2591691_929330_2_1"> Common shares authorized to be issued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" xml:lang="en-US" id="id_2591691_928178_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" xml:lang="en-US" id="id_2591691_928178_2_1"> Shares available for Issuance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" xml:lang="en-US" id="id_2591691_939053_1_1"> Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value 1 </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" xml:lang="en-US" id="id_2591691_939053_2_1"> Vested and Exercisable at September 30, 2013 </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xml:lang="en-US" id="id_2591691_924337_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xml:lang="en-US" id="id_2591691_924337_2_1"> Vested and Exercisable, Options Outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_930255_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_930255_2_1"> Vested and Exercisable, Weighted-Average Exercise Price </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl" xml:lang="en-US" id="id_2591691_930128_1_1"> Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term 1 </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl" xml:lang="en-US" id="id_2591691_930128_2_1"> Weighted average remaining contractual term of options exercisable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xml:lang="en-US" id="id_2591691_938409_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xml:lang="en-US" id="id_2591691_938409_2_1"> Options Exercised, Aggregate Intrinsic Value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_lbl" xml:lang="en-US" id="id_2591691_929847_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_lbl" xml:lang="en-US" id="id_2591691_929847_14_1"> Canceled, Options Outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_931374_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_931374_2_1"> Options canceled, Weighted-Average Exercise Price </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedRestrictedPortion" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedRestrictedPortion"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedRestrictedPortion_lbl" xml:lang="en-US" id="id_2591691_1191909_3_1"> Share based compensation arrangement by share based payment award options granted restricted portion. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedRestrictedPortion_lbl" xml:lang="en-US" id="id_2591691_1191909_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Options Granted Restricted Portion </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedRestrictedPortion_lbl" xml:lang="en-US" id="id_2591691_1191909_2_1"> Stock option granted, Restricted portion </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedRestrictedPortion" xlink:to="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedRestrictedPortion_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xml:lang="en-US" id="id_2591691_929506_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xml:lang="en-US" id="id_2591691_929506_32_1"> Stock options granted </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xml:lang="en-US" id="id_2591691_929506_2_1"> Equity Incentive Plan, shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl" xml:lang="en-US" id="id_2591691_929506_12_1"> Granted, Options Outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_2591691_928357_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="id_2591691_928357_2_1"> Weighted average grant date fair value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xml:lang="en-US" id="id_2591691_939707_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xml:lang="en-US" id="id_2591691_939707_4_1"> Aggregate Intrinsic Value, Options Ending balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xml:lang="en-US" id="id_2591691_939707_5_1"> Aggregate Intrinsic Value, Options Beginning balance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xml:lang="en-US" id="id_2591691_928127_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xml:lang="en-US" id="id_2591691_928127_4_1"> Options Outstanding, Ending balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xml:lang="en-US" id="id_2591691_928127_5_1"> Options Outstanding, Beginning balance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_927714_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_927714_4_1"> Weighted-Average Exercise Price, Options Ending balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_927714_5_1"> Weighted-Average Exercise Price, Options Beginning balance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xml:lang="en-US" id="id_2591691_925836_1_1"> Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term 2 </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xml:lang="en-US" id="id_2591691_925836_2_1"> Weighted average remaining contractual term of options outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_lbl" xml:lang="en-US" id="id_2591691_930352_1_1"> Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term 1 </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_lbl" xml:lang="en-US" id="id_2591691_930352_2_1"> Total unrecognized compensation cost related to unvested stock option grants, weighted average period </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardQuarterlyAwardVestingRightsRestricted" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardQuarterlyAwardVestingRightsRestricted"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardQuarterlyAwardVestingRightsRestricted_lbl" xml:lang="en-US" id="id_2591691_1191912_3_1"> Share based compensation arrangement by share based payment award quarterly award vesting rights restricted. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardQuarterlyAwardVestingRightsRestricted_lbl" xml:lang="en-US" id="id_2591691_1191912_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Quarterly Award Vesting Rights Restricted </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardQuarterlyAwardVestingRightsRestricted_lbl" xml:lang="en-US" id="id_2591691_1191912_2_1"> Stock option granted, Quarterly vesting restricted term </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardQuarterlyAwardVestingRightsRestricted" xlink:to="onvo_ShareBasedCompensationArrangementByShareBasedPaymentAwardQuarterlyAwardVestingRightsRestricted_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_lbl" xml:lang="en-US" id="id_2591691_924873_1_1"> Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_lbl" xml:lang="en-US" id="id_2591691_924873_2_1"> Restricted common stock to founders </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xml:lang="en-US" id="id_2591691_928585_1_1"> Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xml:lang="en-US" id="id_2591691_928585_2_1"> Equity Award [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_929456_1_1"> Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_929456_2_1"> Exercised, Weighted-Average Exercise Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_929456_12_1"> Options exercised, Weighted-Average Exercise Price </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_927283_1_1"> Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_927283_2_1"> Granted, Weighted-Average Exercise Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="id_2591691_927283_12_1"> Options granted, Weighted-Average Exercise Price </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xml:lang="en-US" id="id_2591691_923943_1_1"> Share Based Compensation Option And Incentive Plans Policy </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xml:lang="en-US" id="id_2591691_923943_2_1"> Stock-Based Compensation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:to="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisePrice" xlink:label="onvo_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisePrice_lbl" xml:lang="en-US" id="id_2591691_1038502_3_1"> Share based compensation shares authorized under stock option plans exercise price range exercise price. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisePrice_lbl" xml:lang="en-US" id="id_2591691_1038502_1_1"> Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercise Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisePrice_lbl" xml:lang="en-US" id="id_2591691_1038502_2_1"> Granted incentive stock options to purchase shares of Common stock, exercise price </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisePrice" xlink:to="onvo_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisePrice_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharePrice" xlink:label="us-gaap_SharePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharePrice_lbl" xml:lang="en-US" id="id_2591691_928548_1_1"> Share Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharePrice_lbl" xml:lang="en-US" id="id_2591691_928548_2_1"> Closing price per share of common stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharePrice" xlink:to="us-gaap_SharePrice_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="us-gaap_SharesOutstanding"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharesOutstanding_lbl" xml:lang="en-US" id="id_2591691_923726_1_1"> Shares Outstanding </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_SharesOutstanding_lbl" xml:lang="en-US" id="id_2591691_923726_4_1"> Ending balance, Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_SharesOutstanding_lbl" xml:lang="en-US" id="id_2591691_923726_5_1"> Beginning balance, Shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesOutstanding" xlink:to="us-gaap_SharesOutstanding_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="us-gaap_ShortTermDebtTypeAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShortTermDebtTypeAxis_lbl" xml:lang="en-US" id="id_2591691_923847_1_1"> Short Term Debt Type [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShortTermDebtTypeAxis_lbl" xml:lang="en-US" id="id_2591691_923847_2_1"> Short-term Debt, Type [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermDebtTypeAxis" xlink:to="us-gaap_ShortTermDebtTypeAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="us-gaap_ShortTermDebtTypeDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShortTermDebtTypeDomain_lbl" xml:lang="en-US" id="id_2591691_923877_1_1"> Short Term Debt Type [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShortTermDebtTypeDomain_lbl" xml:lang="en-US" id="id_2591691_923877_2_1"> Short-term Debt, Type [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermDebtTypeDomain" xlink:to="us-gaap_ShortTermDebtTypeDomain_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_SignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareLineItems" xlink:label="onvo_SignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_SignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareLineItems_lbl" xml:lang="en-US" id="id_2591691_1191916_3_1"> Significant accounting policies related to business acquisition revenue recognition and earnings per share. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_SignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareLineItems_lbl" xml:lang="en-US" id="id_2591691_1191916_1_1"> Significant Accounting Policies Related To Business Acquisition Revenue Recognition And Earnings Per Share [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_SignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareLineItems_lbl" xml:lang="en-US" id="id_2591691_1191916_2_1"> Significant Accounting Policies Related To Business Acquisition Revenue Recognition And Earnings Per Share [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_SignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareLineItems" xlink:to="onvo_SignificantAccountingPoliciesRelatedToBusinessAcquisitionRevenueRecognitionAndEarningsPerShareLineItems_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="us-gaap_StatementEquityComponentsAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xml:lang="en-US" id="id_2591691_927592_1_1"> Statement Equity Components [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xml:lang="en-US" id="id_2591691_927592_2_1"> Equity Components [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_StatementEquityComponentsAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US" id="id_2591691_926570_1_1"> Statement [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US" id="id_2591691_926570_2_1"> Statement [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US" id="id_2591691_932756_1_1"> Statement Of Cash Flows [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US" id="id_2591691_932756_2_1"> Statement of Cash Flows [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="us-gaap_StatementOfFinancialPositionAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xml:lang="en-US" id="id_2591691_924693_1_1"> Statement Of Financial Position [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xml:lang="en-US" id="id_2591691_924693_2_1"> Statement of Financial Position [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_StatementOfFinancialPositionAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_2591691_926289_1_1"> Statement Of Stockholders Equity [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xml:lang="en-US" id="id_2591691_926289_2_1"> Statement of Stockholders' Equity [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfStockholdersEquityAbstract" xlink:to="us-gaap_StatementOfStockholdersEquityAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="us-gaap_StatementScenarioAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementScenarioAxis_lbl" xml:lang="en-US" id="id_2591691_924791_1_1"> Statement Scenario [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementScenarioAxis_lbl" xml:lang="en-US" id="id_2591691_924791_2_1"> Scenario [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementScenarioAxis" xlink:to="us-gaap_StatementScenarioAxis_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementTable_lbl" xml:lang="en-US" id="id_2591691_926771_1_1"> Statement [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StatementTable_lbl" xml:lang="en-US" id="id_2591691_926771_2_1"> Statement [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation" xlink:label="us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation_lbl" xml:lang="en-US" id="id_2591691_935148_1_1"> Stock Granted During Period Value Sharebased Compensation </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation_lbl" xml:lang="en-US" id="id_2591691_935148_2_1"> Issuance of Common stock to founders </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation" xlink:to="us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_StockholdersEquityDuringPeriodIssuanceOfCommonStockFromWarrantExercises" xlink:label="onvo_StockholdersEquityDuringPeriodIssuanceOfCommonStockFromWarrantExercises"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_StockholdersEquityDuringPeriodIssuanceOfCommonStockFromWarrantExercises_lbl" xml:lang="en-US" id="id_2591691_1191917_3_1"> Stockholders equity during period issuance of common stock from warrant exercises. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_StockholdersEquityDuringPeriodIssuanceOfCommonStockFromWarrantExercises_lbl" xml:lang="en-US" id="id_2591691_1191917_1_1"> Stockholders Equity During Period Issuance Of Common Stock From Warrant Exercises </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_StockholdersEquityDuringPeriodIssuanceOfCommonStockFromWarrantExercises_lbl" xml:lang="en-US" id="id_2591691_1191917_2_1"> Issuance of Common stock from warrant exercises, net, Shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_StockholdersEquityDuringPeriodIssuanceOfCommonStockFromWarrantExercises" xlink:to="onvo_StockholdersEquityDuringPeriodIssuanceOfCommonStockFromWarrantExercises_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_StockholdersEquityDuringPeriodValueIssuanceOfCommonStockFromWarrantExercises" xlink:label="onvo_StockholdersEquityDuringPeriodValueIssuanceOfCommonStockFromWarrantExercises"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_StockholdersEquityDuringPeriodValueIssuanceOfCommonStockFromWarrantExercises_lbl" xml:lang="en-US" id="id_2591691_1191918_3_1"> Stockholders equity during period value issuance of common stock from warrant exercises. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_StockholdersEquityDuringPeriodValueIssuanceOfCommonStockFromWarrantExercises_lbl" xml:lang="en-US" id="id_2591691_1191918_1_1"> Stockholders Equity During Period Value Issuance Of Common Stock From Warrant Exercises </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_StockholdersEquityDuringPeriodValueIssuanceOfCommonStockFromWarrantExercises_lbl" xml:lang="en-US" id="id_2591691_1191918_2_1"> Issuance of Common stock from warrant exercises, net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_StockholdersEquityDuringPeriodValueIssuanceOfCommonStockFromWarrantExercises" xlink:to="onvo_StockholdersEquityDuringPeriodValueIssuanceOfCommonStockFromWarrantExercises_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US" id="id_2591691_934503_1_1"> Stockholders Equity Including Portion Attributable To Noncontrolling Interest </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US" id="id_2591691_934503_4_1"> Ending balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US" id="id_2591691_934503_5_1"> Beginning balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US" id="id_2591691_934503_6_1"> Total stockholders' equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xml:lang="en-US" id="id_2591691_929743_1_1"> Stockholders Equity Including Portion Attributable To Noncontrolling Interest [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xml:lang="en-US" id="id_2591691_929743_2_1"> Stockholders' Equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_927127_1_1"> Stockholders Equity Note Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xml:lang="en-US" id="id_2591691_927127_2_1"> Stockholders' Equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:to="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xml:lang="en-US" id="id_2591691_926238_1_1"> Stock Issued During Period Shares Conversion Of Convertible Securities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xml:lang="en-US" id="id_2591691_926238_2_1"> Issuance of Common stock through conversion of notes payable, Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl" xml:lang="en-US" id="id_2591691_926238_12_1"> Number of shares issuable upon exercise of warrant </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities" xlink:to="us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US" id="id_2591691_932873_1_1"> Stock Issued During Period Shares New Issues </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US" id="id_2591691_932873_2_1"> Issuance of Common stock </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US" id="id_2591691_932873_12_1"> Sale of common stock in a public offering </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_StockIssuedDuringPeriodSharesPublicOffering" xlink:label="onvo_StockIssuedDuringPeriodSharesPublicOffering"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_StockIssuedDuringPeriodSharesPublicOffering_lbl" xml:lang="en-US" id="id_2591691_1108642_3_1"> Stock Issued During Period Shares Public Offering </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_StockIssuedDuringPeriodSharesPublicOffering_lbl" xml:lang="en-US" id="id_2591691_1108642_1_1"> Stock Issued During Period Shares Public Offering </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_StockIssuedDuringPeriodSharesPublicOffering_lbl" xml:lang="en-US" id="id_2591691_1108642_2_1"> Issuance of Common stock through public offering, Shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_StockIssuedDuringPeriodSharesPublicOffering" xlink:to="onvo_StockIssuedDuringPeriodSharesPublicOffering_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited_lbl" xml:lang="en-US" id="id_2591691_929350_1_1"> Stock Issued During Period Shares Restricted Stock Award Forfeited </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited_lbl" xml:lang="en-US" id="id_2591691_929350_14_1"> Restricted stock forfeitures and adjustments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited" xlink:to="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xml:lang="en-US" id="id_2591691_928235_1_1"> Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xml:lang="en-US" id="id_2591691_928235_2_1"> Issuance of restricted Common stock, Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xml:lang="en-US" id="id_2591691_928235_12_1"> Restricted stock Issued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:to="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl" xml:lang="en-US" id="id_2591691_931010_1_1"> Stock Issued During Period Shares Share Based Compensation </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl" xml:lang="en-US" id="id_2591691_931010_2_1"> Issuance of Common stock to founders, Shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:to="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_lbl" xml:lang="en-US" id="id_2591691_929642_1_1"> Stock Issued During Period Shares Share Based Compensation Gross </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_lbl" xml:lang="en-US" id="id_2591691_929642_2_1"> Shares issued during the year </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross" xlink:to="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xml:lang="en-US" id="id_2591691_930668_1_1"> Stock Issued During Period Shares Stock Options Exercised </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xml:lang="en-US" id="id_2591691_930668_2_1"> Issuances of Common stock from stock option exercises, Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xml:lang="en-US" id="id_2591691_930668_14_1"> Exercised, Options Outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:to="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_StockIssuedDuringPeriodSharesStockOptionsExercisedPriceRemainingPeriod" xlink:label="onvo_StockIssuedDuringPeriodSharesStockOptionsExercisedPriceRemainingPeriod"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_StockIssuedDuringPeriodSharesStockOptionsExercisedPriceRemainingPeriod_lbl" xml:lang="en-US" id="id_2591691_1191919_3_1"> Stock issued during period shares stock options exercised price remaining period. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_StockIssuedDuringPeriodSharesStockOptionsExercisedPriceRemainingPeriod_lbl" xml:lang="en-US" id="id_2591691_1191919_1_1"> Stock Issued During Period Shares Stock Options Exercised Price Remaining Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_StockIssuedDuringPeriodSharesStockOptionsExercisedPriceRemainingPeriod_lbl" xml:lang="en-US" id="id_2591691_1191919_2_1"> Remaining options vest </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_StockIssuedDuringPeriodSharesStockOptionsExercisedPriceRemainingPeriod" xlink:to="onvo_StockIssuedDuringPeriodSharesStockOptionsExercisedPriceRemainingPeriod_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl" xml:lang="en-US" id="id_2591691_935837_1_1"> Stock Issued During Period Value Conversion Of Convertible Securities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl" xml:lang="en-US" id="id_2591691_935837_2_1"> Issuance of Common stock through conversion of notes payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities" xlink:to="us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_StockIssuedDuringPeriodValuePublicOffering" xlink:label="onvo_StockIssuedDuringPeriodValuePublicOffering"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_StockIssuedDuringPeriodValuePublicOffering_lbl" xml:lang="en-US" id="id_2591691_1064076_3_1"> Stock Issued During Period Value Public Offering </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_StockIssuedDuringPeriodValuePublicOffering_lbl" xml:lang="en-US" id="id_2591691_1064076_1_1"> Stock Issued During Period Value Public Offering </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_StockIssuedDuringPeriodValuePublicOffering_lbl" xml:lang="en-US" id="id_2591691_1064076_2_1"> Issuance of Common stock through public offering </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_StockIssuedDuringPeriodValuePublicOffering" xlink:to="onvo_StockIssuedDuringPeriodValuePublicOffering_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures_lbl" xml:lang="en-US" id="id_2591691_937912_1_1"> Stock Issued During Period Value Restricted Stock Award Forfeitures </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures_lbl" xml:lang="en-US" id="id_2591691_937912_14_1"> Restricted stock forfeitures and adjustments, value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures" xlink:to="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xml:lang="en-US" id="id_2591691_935671_1_1"> Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xml:lang="en-US" id="id_2591691_935671_2_1"> Issuance of restricted Common stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:to="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" xml:lang="en-US" id="id_2591691_934355_1_1"> Stock Issued During Period Value Stock Options Exercised </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" xml:lang="en-US" id="id_2591691_934355_2_1"> Issuances of Common stock from stock option exercises </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:to="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="us-gaap_SubsequentEventsAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xml:lang="en-US" id="id_2591691_925770_1_1"> Subsequent Events [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xml:lang="en-US" id="id_2591691_925770_2_1"> Subsequent Events [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsAbstract" xlink:to="us-gaap_SubsequentEventsAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="us-gaap_SubsequentEventsTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xml:lang="en-US" id="id_2591691_929519_1_1"> Subsequent Events [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xml:lang="en-US" id="id_2591691_929519_2_1"> Subsequent Events </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsTextBlock" xlink:to="us-gaap_SubsequentEventsTextBlock_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US" id="id_2591691_930441_1_1"> Supplemental Cash Flow Information [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US" id="id_2591691_930441_2_1"> Supplemental Disclosure of Cash Flow Information: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TextBlockAbstract" xlink:label="us-gaap_TextBlockAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TextBlockAbstract_lbl" xml:lang="en-US" id="id_2591691_931202_1_1"> Text Block [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TextBlockAbstract_lbl" xml:lang="en-US" id="id_2591691_931202_2_1"> Text Block [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TextBlockAbstract" xlink:to="us-gaap_TextBlockAbstract_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_TradingSymbol" xlink:label="dei_TradingSymbol"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_TradingSymbol_lbl" xml:lang="en-US" id="id_2591691_921927_1_1"> Trading Symbol </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_TradingSymbol_lbl" xml:lang="en-US" id="id_2591691_921927_2_1"> Trading Symbol </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_TwelveMonthResearchContractAgreementMember" xlink:label="onvo_TwelveMonthResearchContractAgreementMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_TwelveMonthResearchContractAgreementMember_lbl" xml:lang="en-US" id="id_2591691_1191921_3_1"> Twelve month research contract agreement. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_TwelveMonthResearchContractAgreementMember_lbl" xml:lang="en-US" id="id_2591691_1191921_1_1"> Twelve Month Research Contract Agreement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_TwelveMonthResearchContractAgreementMember_lbl" xml:lang="en-US" id="id_2591691_1191921_2_1"> 12 month research contract agreement [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_TwelveMonthResearchContractAgreementMember" xlink:to="onvo_TwelveMonthResearchContractAgreementMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_TwoThousandEightPlanMember" xlink:label="onvo_TwoThousandEightPlanMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_TwoThousandEightPlanMember_lbl" xml:lang="en-US" id="id_2591691_1104070_3_1"> Two Thousand Eight Plan [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_TwoThousandEightPlanMember_lbl" xml:lang="en-US" id="id_2591691_1104070_1_1"> Two Thousand Eight Plan [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_TwoThousandEightPlanMember_lbl" xml:lang="en-US" id="id_2591691_1104070_2_1"> 2008 Plan [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_TwoThousandEightPlanMember" xlink:to="onvo_TwoThousandEightPlanMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_TwoThousandTwelvePlanMember" xlink:label="onvo_TwoThousandTwelvePlanMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_TwoThousandTwelvePlanMember_lbl" xml:lang="en-US" id="id_2591691_1146199_3_1"> Two Thousand Twelve Plan [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_TwoThousandTwelvePlanMember_lbl" xml:lang="en-US" id="id_2591691_1146199_1_1"> Two Thousand Twelve Plan [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_TwoThousandTwelvePlanMember_lbl" xml:lang="en-US" id="id_2591691_1146199_2_1"> 2012 Plan [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_TwoThousandTwelvePlanMember" xlink:to="onvo_TwoThousandTwelvePlanMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_UnderwritingAgreementMember" xlink:label="onvo_UnderwritingAgreementMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_UnderwritingAgreementMember_lbl" xml:lang="en-US" id="id_2591691_1203830_3_1"> Underwriting Agreement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_UnderwritingAgreementMember_lbl" xml:lang="en-US" id="id_2591691_1203830_1_1"> Underwriting Agreement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_UnderwritingAgreementMember_lbl" xml:lang="en-US" id="id_2591691_1203830_2_1"> Underwriting Agreement [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_UnderwritingAgreementMember" xlink:to="onvo_UnderwritingAgreementMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_UnitedStatesTreasuryMember" xlink:label="onvo_UnitedStatesTreasuryMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_UnitedStatesTreasuryMember_lbl" xml:lang="en-US" id="id_2591691_947408_3_1"> United States Treasury [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_UnitedStatesTreasuryMember_lbl" xml:lang="en-US" id="id_2591691_947408_1_1"> United States Treasury [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_UnitedStatesTreasuryMember_lbl" xml:lang="en-US" id="id_2591691_947408_2_1"> U.S. Treasury [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_UnitedStatesTreasuryMember" xlink:to="onvo_UnitedStatesTreasuryMember_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnrealizedGainLossOnDerivatives" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xml:lang="en-US" id="id_2591691_936725_1_1"> Unrealized Gain Loss On Derivatives </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xml:lang="en-US" id="id_2591691_936725_14_1"> Change in fair value of warrant liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrealizedGainLossOnDerivatives" xlink:to="us-gaap_UnrealizedGainLossOnDerivatives_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="us-gaap_UseOfEstimates"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UseOfEstimates_lbl" xml:lang="en-US" id="id_2591691_931855_1_1"> Use Of Estimates </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UseOfEstimates_lbl" xml:lang="en-US" id="id_2591691_931855_2_1"> Use of Estimates </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UseOfEstimates" xlink:to="us-gaap_UseOfEstimates_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_WarrantInducedExercisePlacementAgentFeesLegalCostAndOtherFeesExpense" xlink:label="onvo_WarrantInducedExercisePlacementAgentFeesLegalCostAndOtherFeesExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_WarrantInducedExercisePlacementAgentFeesLegalCostAndOtherFeesExpense_lbl" xml:lang="en-US" id="id_2591691_1191926_3_1"> Warrant induced exercise placement agent fees legal cost and other fees expense. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_WarrantInducedExercisePlacementAgentFeesLegalCostAndOtherFeesExpense_lbl" xml:lang="en-US" id="id_2591691_1191926_1_1"> Warrant Induced Exercise Placement Agent Fees Legal Cost And Other Fees Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_WarrantInducedExercisePlacementAgentFeesLegalCostAndOtherFeesExpense_lbl" xml:lang="en-US" id="id_2591691_1191926_2_1"> Costs incurred related to warrant exercises </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_WarrantInducedExercisePlacementAgentFeesLegalCostAndOtherFeesExpense" xlink:to="onvo_WarrantInducedExercisePlacementAgentFeesLegalCostAndOtherFeesExpense_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_WarrantIssuedInConnectionWithConvertibleNotesPayable" xlink:label="onvo_WarrantIssuedInConnectionWithConvertibleNotesPayable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_WarrantIssuedInConnectionWithConvertibleNotesPayable_lbl" xml:lang="en-US" id="id_2591691_1200729_3_1"> Warrant issued in connection with convertible notes payable value. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_WarrantIssuedInConnectionWithConvertibleNotesPayable_lbl" xml:lang="en-US" id="id_2591691_1200729_1_1"> Warrant Issued In Connection With Convertible Notes Payable </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_WarrantIssuedInConnectionWithConvertibleNotesPayable_lbl" xml:lang="en-US" id="id_2591691_1200729_2_1"> Warrant issued in connection with convertible notes payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_WarrantIssuedInConnectionWithConvertibleNotesPayable" xlink:to="onvo_WarrantIssuedInConnectionWithConvertibleNotesPayable_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WarrantMember" xlink:label="us-gaap_WarrantMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WarrantMember_lbl" xml:lang="en-US" id="id_2591691_929614_1_1"> Warrant [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WarrantMember_lbl" xml:lang="en-US" id="id_2591691_929614_2_1"> Warrant [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantMember" xlink:to="us-gaap_WarrantMember_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_WarrantOrRightExpenseOrRevenueRecognized" xlink:label="onvo_WarrantOrRightExpenseOrRevenueRecognized"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_WarrantOrRightExpenseOrRevenueRecognized_lbl" xml:lang="en-US" id="id_2591691_1191931_3_1"> Warrant or right expense or revenue recognized. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_WarrantOrRightExpenseOrRevenueRecognized_lbl" xml:lang="en-US" id="id_2591691_1191931_1_1"> Warrant Or Right Expense Or Revenue Recognized </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_WarrantOrRightExpenseOrRevenueRecognized_lbl" xml:lang="en-US" id="id_2591691_1191931_2_1"> Recognized expenses of warrants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_WarrantOrRightExpenseOrRevenueRecognized" xlink:to="onvo_WarrantOrRightExpenseOrRevenueRecognized_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_WarrantReclassifiedEquityInstruments" xlink:label="onvo_WarrantReclassifiedEquityInstruments"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_WarrantReclassifiedEquityInstruments_lbl" xml:lang="en-US" id="id_2591691_1191932_3_1"> Warrant reclassified equity instruments. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_WarrantReclassifiedEquityInstruments_lbl" xml:lang="en-US" id="id_2591691_1191932_1_1"> Warrant Reclassified Equity Instruments </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_WarrantReclassifiedEquityInstruments_lbl" xml:lang="en-US" id="id_2591691_1191932_2_1"> Warrant reclassified as equity instruments </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="onvo_WarrantReclassifiedEquityInstruments_lbl" xml:lang="en-US" id="id_2591691_1191932_14_1"> Warrant liability reclassified to equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_WarrantReclassifiedEquityInstruments" xlink:to="onvo_WarrantReclassifiedEquityInstruments_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_WarrantsAndRelatedBeneficialConversionFeatureValue" xlink:label="onvo_WarrantsAndRelatedBeneficialConversionFeatureValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_WarrantsAndRelatedBeneficialConversionFeatureValue_lbl" xml:lang="en-US" id="id_2591691_1191933_3_1"> Warrants and related beneficial conversion feature value. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_WarrantsAndRelatedBeneficialConversionFeatureValue_lbl" xml:lang="en-US" id="id_2591691_1191933_1_1"> Warrants And Related Beneficial Conversion Feature Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_WarrantsAndRelatedBeneficialConversionFeatureValue_lbl" xml:lang="en-US" id="id_2591691_1191933_2_1"> Warrants and related beneficial conversion feature valued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_WarrantsAndRelatedBeneficialConversionFeatureValue" xlink:to="onvo_WarrantsAndRelatedBeneficialConversionFeatureValue_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WarrantsAndRightsOutstanding" xlink:label="us-gaap_WarrantsAndRightsOutstanding"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WarrantsAndRightsOutstanding_lbl" xml:lang="en-US" id="id_2591691_935273_1_1"> Warrants And Rights Outstanding </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WarrantsAndRightsOutstanding_lbl" xml:lang="en-US" id="id_2591691_935273_2_1"> Estimated fair value of the outstanding warrant liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantsAndRightsOutstanding" xlink:to="us-gaap_WarrantsAndRightsOutstanding_lbl"/>
<loc xlink:type="locator" xlink:href="onvo-20130930.xsd#onvo_WarrantsCashlessExerciseNumber" xlink:label="onvo_WarrantsCashlessExerciseNumber"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="onvo_WarrantsCashlessExerciseNumber_lbl" xml:lang="en-US" id="id_2591691_1191934_3_1"> Warrants cashless exercise number. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="onvo_WarrantsCashlessExerciseNumber_lbl" xml:lang="en-US" id="id_2591691_1191934_1_1"> Warrants Cashless Exercise Number </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="onvo_WarrantsCashlessExerciseNumber_lbl" xml:lang="en-US" id="id_2591691_1191934_2_1"> Number of warrant exercised through cashless </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="onvo_WarrantsCashlessExerciseNumber" xlink:to="onvo_WarrantsCashlessExerciseNumber_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US" id="id_2591691_924805_1_1"> Weighted Average Number Of Diluted Shares Outstanding </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US" id="id_2591691_924805_2_1"> Weighted average shares used in computing net income (loss) per common share - diluted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US" id="id_2591691_929768_1_1"> Weighted Average Number Of Shares Outstanding Basic </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US" id="id_2591691_929768_2_1"> Weighted average shares used in computing net income (loss) per common share - basic </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl"/>
</labelLink>
</linkbase>

↑Top
Filing Submission 0001193125-13-435186   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Tue., Apr. 23, 2:09:54.1am ET