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Actinium Pharmaceuticals, Inc. – ‘10-Q’ for 6/30/17 – ‘EX-101.LAB’

On:  Friday, 8/4/17, at 4:19pm ET   ·   For:  6/30/17   ·   Accession #:  1213900-17-8244   ·   File #:  1-36374

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

 8/04/17  Actinium Pharmaceuticals, Inc.    10-Q        6/30/17   60:3.8M                                   Edgar Agents LLC/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    369K 
 2: EX-10.1     Assignment and Consent Agreement, Dated June 6,     HTML     37K 
                2017, Among 275 Madison Avenue Rpw 1 LLC, 275                    
                Madison Avenue Rpw 2, LLC, Actinium                              
                Pharmaceuticals, Inc. and Relmada Therapeutics,                  
                Inc.                                                             
 3: EX-10.3     Amended and Restated License Agreement, Dated June  HTML     33K 
                8, 2017, Between Actinium Pharmaceuticals, Inc.                  
                and Relmada Therapeutics, Inc.                                   
 4: EX-10.4     Offer Letter; Dated May 26, 2017, by and Between    HTML     78K 
                Actinium Pharmaceuticals, Inc. and Dr. Nitya G.                  
                Ray                                                              
 5: EX-10.5     Amended and Restated At-The-Market Market Issuance  HTML    251K 
                Sales Agreement, Dated July 3, 2017, Among Fbr                   
                Capital Markets & Co., Jonestrading Institutional                
                Services LLC, and Mlv & Co. LLC.                                 
 6: EX-10.6     Agreement, Dated June 6, 2017, by and Between       HTML     35K 
                Actinium Pharmaceuticals, Inc. and Sergio Traversa               
 7: EX-10.7     Consulting Agreement, Dated May 22, 2017, by and    HTML     65K 
                Between Actinium Pharmaceuticals, Inc. and Dragan                
                Cicic                                                            
 8: EX-10.8     Separation and Settlement Agreement, Dated May 12,  HTML     60K 
                2017, by and Between Actinium Pharmaceuticals,                   
                Inc. and Kaushik Dave                                            
 9: EX-10.9     Separation and Settlement Agreement, Dated May 12,  HTML     57K 
                2017, by and Between Actinium Pharmaceuticals,                   
                Inc. and Dragan Cicic                                            
10: EX-31.1     Certification -- §302 - SOA'02                      HTML     25K 
11: EX-31.2     Certification -- §302 - SOA'02                      HTML     25K 
12: EX-32.1     Certification -- §906 - SOA'02                      HTML     20K 
13: EX-32.2     Certification -- §906 - SOA'02                      HTML     20K 
20: R1          Document and Entity Information                     HTML     40K 
21: R2          Consolidated Balance Sheets (Unaudited)             HTML     84K 
22: R3          Consolidated Balance Sheets (Unaudited)             HTML     37K 
                (Parenthetical)                                                  
23: R4          Consolidated Statements of Operations (Unaudited)   HTML     53K 
24: R5          Consolidated Statements of Cash Flows (Unaudited)   HTML     83K 
25: R6          Description of Business and Summary of Significant  HTML     67K 
                Accounting Policies                                              
26: R7          Related Party Transactions                          HTML     31K 
27: R8          Prepaid Expenses and Other Current Assets           HTML     26K 
28: R9          Property and Equipment                              HTML     28K 
29: R10         Derivatives                                         HTML     47K 
30: R11         Commitments and Contingencies                       HTML     56K 
31: R12         Equity                                              HTML     65K 
32: R13         Subsequent Events                                   HTML     24K 
33: R14         Description of Business and Summary of Significant  HTML    106K 
                Accounting Policies (Policies)                                   
34: R15         Description of Business and Summary of Significant  HTML     35K 
                Accounting Policies (Tables)                                     
35: R16         Related Party Transactions (Tables)                 HTML     22K 
36: R17         Prepaid Expenses and Other Current Assets (Tables)  HTML     25K 
37: R18         Property and Equipment (Tables)                     HTML     25K 
38: R19         Derivatives (Tables)                                HTML     43K 
39: R20         Commitments and Contingencies (Tables)              HTML     30K 
40: R21         Equity (Tables)                                     HTML     44K 
41: R22         Description of Business and Summary of Significant  HTML     30K 
                Accounting Policies (Details)                                    
42: R23         Description of Business and Summary of Significant  HTML     27K 
                Accounting Policies (Details 1)                                  
43: R24         Description of Business and Summary of Significant  HTML     31K 
                Accounting Policies (Details Textual)                            
44: R25         Related Party Transactions (Details)                HTML     25K 
45: R26         Related Party Transactions (Details Textual)        HTML     32K 
46: R27         Prepaid Expenses and Other Current Assets           HTML     30K 
                (Details)                                                        
47: R28         Property and Equipment (Details)                    HTML     34K 
48: R29         Property and Equipment (Details Textual)            HTML     22K 
49: R30         Derivatives (Details)                               HTML     31K 
50: R31         Derivatives (Details 1)                             HTML     49K 
51: R32         Derivatives (Details Textual)                       HTML     30K 
52: R33         Commitments and Contingencies (Details)             HTML     39K 
53: R34         Commitments and Contingencies (Details 1)           HTML     35K 
54: R35         Commitments and Contingencies (Details Textual)     HTML    131K 
55: R36         Equity (Details)                                    HTML     69K 
56: R37         Equity (Details Textual)                            HTML    108K 
57: R38         Subsequent Events (Details)                         HTML     47K 
59: XML         IDEA XML File -- Filing Summary                      XML     92K 
58: EXCEL       IDEA Workbook of Financial Reports                  XLSX     47K 
17: EX-101.INS  XBRL Instance -- atnm-20170630                       XML    744K 
19: EX-101.CAL  XBRL Calculations -- atnm-20170630_cal               XML     87K 
14: EX-101.DEF  XBRL Definitions -- atnm-20170630_def                XML    356K 
15: EX-101.LAB  XBRL Labels -- atnm-20170630_lab                     XML    883K 
16: EX-101.PRE  XBRL Presentations -- atnm-20170630_pre              XML    566K 
18: EX-101.SCH  XBRL Schema -- atnm-20170630                         XSD    126K 
60: ZIP         XBRL Zipped Folder -- 0001213900-17-008244-xbrl      Zip     93K

‘EX-101.LAB’   —   XBRL Labels — atnm-20170630_lab

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
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<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_dei_DocumentPeriodEndDate" xml:lang="en-US"> Document Period End Date </label>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_929216F4IJ579I98G136_us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_CashAndCashEquivalentsAtCarryingValue" xml:lang="en-US"> Cash and Cash Equivalents, at Carrying Value </label>
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<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="lab_141438H6KL791K10I358_us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:label="loc_350FKH75322F_us-gaap_RestrictedCashAndCashEquivalents"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_RestrictedCashAndCashEquivalents" xml:lang="en-US"> Restricted Cash and Cash Equivalents </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_RestrictedCashAndCashEquivalents" xml:lang="en-US"> Restricted cash - current </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_RestrictedCashAndCashEquivalents" xlink:to="lab_572HMJ97544H_us-gaap_RestrictedCashAndCashEquivalents"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xml:lang="en-US"> Prepaid Expense and Other Assets, Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xml:lang="en-US"> Prepaid expenses and other current assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xml:lang="en-US"> Total prepaid expenses and other current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:to="lab_141438H6KL791K10I358_us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_350FKH75322F_us-gaap_AssetsCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_AssetsCurrent" xml:lang="en-US"> Assets, Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_AssetsCurrent" xml:lang="en-US"> Total current assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_572HMJ97544H_us-gaap_AssetsCurrent" xml:lang="en-US"> Total Current Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_AssetsCurrent" xlink:to="lab_572HMJ97544H_us-gaap_AssetsCurrent"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentNet"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentNet" xml:lang="en-US"> Property, Plant and Equipment, Net </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentNet" xml:lang="en-US"> Property and equipment, net </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentNet" xml:lang="en-US"> Property and equipment, net of accumulated depreciation </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentNet" xml:lang="en-US"> Property and equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentNet" xlink:to="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentNet"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SecurityDeposit" xlink:label="loc_350FKH75322F_us-gaap_SecurityDeposit"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_SecurityDeposit" xml:lang="en-US"> Security Deposit </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_SecurityDeposit" xml:lang="en-US"> Security deposit </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_SecurityDeposit" xlink:to="lab_572HMJ97544H_us-gaap_SecurityDeposit"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:label="loc_929216F4IJ579I98G136_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xml:lang="en-US"> Restricted Cash and Cash Equivalents, Noncurrent </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xml:lang="en-US"> Restricted cash </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:to="lab_141438H6KL791K10I358_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Assets" xlink:label="loc_350FKH75322F_us-gaap_Assets"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_Assets" xml:lang="en-US"> Assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_Assets" xml:lang="en-US"> Total assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_572HMJ97544H_us-gaap_Assets" xml:lang="en-US"> Total Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_Assets" xlink:to="lab_572HMJ97544H_us-gaap_Assets"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_929216F4IJ579I98G136_us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_LiabilitiesAndStockholdersEquityAbstract" xml:lang="en-US"> Liabilities and Equity [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_LiabilitiesAndStockholdersEquityAbstract" xml:lang="en-US"> LIABILITIES AND SHAREHOLDERS' EQUITY </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_LiabilitiesAndStockholdersEquityAbstract" xml:lang="en-US"> Liabilities and Stockholders' Equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="lab_141438H6KL791K10I358_us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_350FKH75322F_us-gaap_LiabilitiesCurrentAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_LiabilitiesCurrentAbstract" xml:lang="en-US"> Liabilities, Current [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_LiabilitiesCurrentAbstract" xml:lang="en-US"> Current liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_LiabilitiesCurrentAbstract" xml:lang="en-US"> Current Liabilities: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_LiabilitiesCurrentAbstract" xlink:to="lab_572HMJ97544H_us-gaap_LiabilitiesCurrentAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:label="loc_929216F4IJ579I98G136_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xml:lang="en-US"> Accounts Payable and Accrued Liabilities, Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xml:lang="en-US"> Accounts payable and accrued liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xml:lang="en-US"> Accounts payable and accrued expenses </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance" xlink:label="lab_141438H6KL791K10I358_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xml:lang="en-US"> Accounts payable and accrued liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/disclosureGuidance" xlink:label="lab_141438H6KL791K10I358_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xml:lang="en-US"> Accounts payable and accrued expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:to="lab_141438H6KL791K10I358_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsPayableRelatedPartiesCurrent" xlink:label="loc_350FKH75322F_us-gaap_AccountsPayableRelatedPartiesCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_AccountsPayableRelatedPartiesCurrent" xml:lang="en-US"> Accounts Payable, Related Parties, Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_AccountsPayableRelatedPartiesCurrent" xml:lang="en-US"> Accounts payable and accrued expenses - related parties </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_AccountsPayableRelatedPartiesCurrent" xlink:to="lab_572HMJ97544H_us-gaap_AccountsPayableRelatedPartiesCurrent"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeLiabilitiesCurrent" xlink:label="loc_929216F4IJ579I98G136_us-gaap_DerivativeLiabilitiesCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_DerivativeLiabilitiesCurrent" xml:lang="en-US"> Derivative Liabilities, Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_DerivativeLiabilitiesCurrent" xml:lang="en-US"> Derivative liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_DerivativeLiabilitiesCurrent" xlink:to="lab_141438H6KL791K10I358_us-gaap_DerivativeLiabilitiesCurrent"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_350FKH75322F_us-gaap_LiabilitiesCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_LiabilitiesCurrent" xml:lang="en-US"> Liabilities, Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_LiabilitiesCurrent" xml:lang="en-US"> Total current liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_572HMJ97544H_us-gaap_LiabilitiesCurrent" xml:lang="en-US"> Total Current Liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_LiabilitiesCurrent" xlink:to="lab_572HMJ97544H_us-gaap_LiabilitiesCurrent"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_929216F4IJ579I98G136_us-gaap_Liabilities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_Liabilities" xml:lang="en-US"> Liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_Liabilities" xml:lang="en-US"> Total Liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_Liabilities" xml:lang="en-US"> Total Liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_Liabilities" xlink:to="lab_141438H6KL791K10I358_us-gaap_Liabilities"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_350FKH75322F_us-gaap_CommitmentsAndContingencies"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_CommitmentsAndContingencies" xml:lang="en-US"> Commitments and Contingencies </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_CommitmentsAndContingencies" xml:lang="en-US"> Commitments and contingencies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_CommitmentsAndContingencies" xlink:to="lab_572HMJ97544H_us-gaap_CommitmentsAndContingencies"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_929216F4IJ579I98G136_us-gaap_StockholdersEquityAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockholdersEquityAbstract" xml:lang="en-US"> Shareholders' Deficit </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockholdersEquityAbstract" xml:lang="en-US"> Shareholders' deficit </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockholdersEquityAbstract" xml:lang="en-US"> Stockholders' Equity: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_StockholdersEquityAbstract" xlink:to="lab_141438H6KL791K10I358_us-gaap_StockholdersEquityAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_350FKH75322F_us-gaap_PreferredStockValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_PreferredStockValue" xml:lang="en-US"> Preferred Stock, 100,000,000 Shares .01 Par Authorized, 0 Outstanding </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_PreferredStockValue" xml:lang="en-US"> Preferred stock, $0.001 par value; 50,000,000 shares authorized, 0 shares issued and outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_PreferredStockValue" xlink:to="lab_572HMJ97544H_us-gaap_PreferredStockValue"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_929216F4IJ579I98G136_us-gaap_CommonStockValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_CommonStockValue" xml:lang="en-US"> Common Stock, Value, Issued </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_CommonStockValue" xml:lang="en-US"> Common stock, $0.001 par value; 200,000,000 shares authorized; 57,152,399 and 55,801,742 shares issued and outstanding, respectively </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_CommonStockValue" xml:lang="en-US"> Common stock, $0.001 par value; 200,000,000 shares authorized; 58,519,073 and 55,801,742 shares issued and outstanding, respectively </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_CommonStockValue" xlink:to="lab_141438H6KL791K10I358_us-gaap_CommonStockValue"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_350FKH75322F_us-gaap_AdditionalPaidInCapital"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_AdditionalPaidInCapital" xml:lang="en-US"> Additional Paid In Capital </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_AdditionalPaidInCapital" xml:lang="en-US"> Additional paid-in capital </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_572HMJ97544H_us-gaap_AdditionalPaidInCapital" xml:lang="en-US"> Paid in capital </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_AdditionalPaidInCapital" xlink:to="lab_572HMJ97544H_us-gaap_AdditionalPaidInCapital"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_929216F4IJ579I98G136_us-gaap_RetainedEarningsAccumulatedDeficit"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_RetainedEarningsAccumulatedDeficit" xml:lang="en-US"> Retained Earnings (Accumulated Deficit) </label>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_350FKH75322F_us-gaap_StockholdersEquity"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_StockholdersEquity" xml:lang="en-US"> Stockholders' Equity Attributable to Parent </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_StockholdersEquity" xml:lang="en-US"> Stockholder's Deficiency </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_StockholdersEquity" xml:lang="en-US"> Total shareholders' equity </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_572HMJ97544H_us-gaap_StockholdersEquity" xml:lang="en-US"> Total Stockholders' Equity </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_572HMJ97544H_us-gaap_StockholdersEquity" xml:lang="en-US"> Beginning Balance </label>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_929216F4IJ579I98G136_us-gaap_LiabilitiesAndStockholdersEquity"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_LiabilitiesAndStockholdersEquity" xml:lang="en-US"> Liabilities and Equity </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_LiabilitiesAndStockholdersEquity" xml:lang="en-US"> Total liabilities and shareholders' equity </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_LiabilitiesAndStockholdersEquity" xml:lang="en-US"> Total Liabilities and Stockholders' Equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="lab_141438H6KL791K10I358_us-gaap_LiabilitiesAndStockholdersEquity"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="loc_350FKH75322F_us-gaap_PreferredStockParOrStatedValuePerShare"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_PreferredStockParOrStatedValuePerShare" xml:lang="en-US"> Preferred Stock, Par Or Stated Value Per Share </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_PreferredStockParOrStatedValuePerShare" xml:lang="en-US"> Preferred stock, par value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_PreferredStockParOrStatedValuePerShare" xlink:to="lab_572HMJ97544H_us-gaap_PreferredStockParOrStatedValuePerShare"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PreferredStockSharesAuthorized"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PreferredStockSharesAuthorized" xml:lang="en-US"> Preferred Stock, Shares Authorized </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PreferredStockSharesAuthorized" xml:lang="en-US"> Preferred stock, shares authorized </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PreferredStockSharesAuthorized" xlink:to="lab_141438H6KL791K10I358_us-gaap_PreferredStockSharesAuthorized"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="loc_350FKH75322F_us-gaap_PreferredStockSharesIssued"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_PreferredStockSharesIssued" xml:lang="en-US"> Preferred Stock, Shares Issued </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_PreferredStockSharesIssued" xml:lang="en-US"> Preferred stock, shares issued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_PreferredStockSharesIssued" xlink:to="lab_572HMJ97544H_us-gaap_PreferredStockSharesIssued"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PreferredStockSharesOutstanding"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PreferredStockSharesOutstanding" xml:lang="en-US"> Preferred Stock, Shares Outstanding </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PreferredStockSharesOutstanding" xml:lang="en-US"> No. of Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PreferredStockSharesOutstanding" xml:lang="en-US"> Preferred stock, shares outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PreferredStockSharesOutstanding" xlink:to="lab_141438H6KL791K10I358_us-gaap_PreferredStockSharesOutstanding"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_350FKH75322F_us-gaap_CommonStockParOrStatedValuePerShare"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_CommonStockParOrStatedValuePerShare" xml:lang="en-US"> Common Stock, Par or Stated Value Per Share </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_CommonStockParOrStatedValuePerShare" xml:lang="en-US"> Common stock, par value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_CommonStockParOrStatedValuePerShare" xml:lang="en-US"> Common stock, par value per share </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="lab_572HMJ97544H_us-gaap_CommonStockParOrStatedValuePerShare" xml:lang="en-US"> Common stock, par value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="lab_572HMJ97544H_us-gaap_CommonStockParOrStatedValuePerShare"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_929216F4IJ579I98G136_us-gaap_CommonStockSharesAuthorized"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_CommonStockSharesAuthorized" xml:lang="en-US"> Common Stock, Shares Authorized </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_CommonStockSharesAuthorized" xml:lang="en-US"> Common stock, shares authorized </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_CommonStockSharesAuthorized" xlink:to="lab_141438H6KL791K10I358_us-gaap_CommonStockSharesAuthorized"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_350FKH75322F_us-gaap_CommonStockSharesIssued"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_CommonStockSharesIssued" xml:lang="en-US"> Common Stock, Shares, Issued </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_CommonStockSharesIssued" xml:lang="en-US"> Common stock, shares issued </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_CommonStockSharesIssued" xml:lang="en-US"> Common stock shares issued in exchange of equity securities of company </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="lab_572HMJ97544H_us-gaap_CommonStockSharesIssued" xml:lang="en-US"> Common stock sold, shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_CommonStockSharesIssued" xlink:to="lab_572HMJ97544H_us-gaap_CommonStockSharesIssued"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_929216F4IJ579I98G136_us-gaap_CommonStockSharesOutstanding"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_CommonStockSharesOutstanding" xml:lang="en-US"> Common Stock, Shares, Outstanding </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_CommonStockSharesOutstanding" xml:lang="en-US"> Common stock, shares outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_CommonStockSharesOutstanding" xlink:to="lab_141438H6KL791K10I358_us-gaap_CommonStockSharesOutstanding"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_350FKH75322F_us-gaap_IncomeStatementAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_IncomeStatementAbstract" xml:lang="en-US"> Statements of Operations [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_IncomeStatementAbstract" xml:lang="en-US"> Income Statement [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_IncomeStatementAbstract" xlink:to="lab_572HMJ97544H_us-gaap_IncomeStatementAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SalesRevenueNet" xlink:label="loc_929216F4IJ579I98G136_us-gaap_SalesRevenueNet"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_SalesRevenueNet" xml:lang="en-US"> Sales </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SalesRevenueNet" xml:lang="en-US"> Revenue </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_SalesRevenueNet" xlink:to="lab_141438H6KL791K10I358_us-gaap_SalesRevenueNet"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="loc_350FKH75322F_us-gaap_OperatingExpensesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_OperatingExpensesAbstract" xml:lang="en-US"> Expenses </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_OperatingExpensesAbstract" xml:lang="en-US"> Operating expenses: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_OperatingExpensesAbstract" xlink:to="lab_572HMJ97544H_us-gaap_OperatingExpensesAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ResearchAndDevelopmentExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ResearchAndDevelopmentExpense" xml:lang="en-US"> Research and Development Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ResearchAndDevelopmentExpense" xml:lang="en-US"> Research recorded fees </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ResearchAndDevelopmentExpense" xml:lang="en-US"> Research and development, net of reimbursements </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance" xlink:label="lab_141438H6KL791K10I358_us-gaap_ResearchAndDevelopmentExpense" xml:lang="en-US"> Research and development costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ResearchAndDevelopmentExpense" xlink:to="lab_141438H6KL791K10I358_us-gaap_ResearchAndDevelopmentExpense"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_350FKH75322F_us-gaap_GeneralAndAdministrativeExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_GeneralAndAdministrativeExpense" xml:lang="en-US"> General and Administrative Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_GeneralAndAdministrativeExpense" xml:lang="en-US"> General and administrative </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_GeneralAndAdministrativeExpense" xlink:to="lab_572HMJ97544H_us-gaap_GeneralAndAdministrativeExpense"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Depreciation" xlink:label="loc_929216F4IJ579I98G136_us-gaap_Depreciation"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_Depreciation" xml:lang="en-US"> Depreciation </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_Depreciation" xml:lang="en-US"> Depreciation expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_Depreciation" xlink:to="lab_141438H6KL791K10I358_us-gaap_Depreciation"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_350FKH75322F_us-gaap_OperatingExpenses"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_OperatingExpenses" xml:lang="en-US"> Operating Expenses </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_OperatingExpenses" xml:lang="en-US"> Total expenses </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_572HMJ97544H_us-gaap_OperatingExpenses" xml:lang="en-US"> Total operating expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_OperatingExpenses" xlink:to="lab_572HMJ97544H_us-gaap_OperatingExpenses"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_929216F4IJ579I98G136_us-gaap_OperatingIncomeLoss"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_OperatingIncomeLoss" xml:lang="en-US"> Operating Loss </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_OperatingIncomeLoss" xml:lang="en-US"> Net loss from operations </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_OperatingIncomeLoss" xml:lang="en-US"> Loss from operations </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_OperatingIncomeLoss" xlink:to="lab_141438H6KL791K10I358_us-gaap_OperatingIncomeLoss"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="loc_350FKH75322F_us-gaap_NonoperatingIncomeExpenseAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_NonoperatingIncomeExpenseAbstract" xml:lang="en-US"> Other Income (Expense) </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_NonoperatingIncomeExpenseAbstract" xml:lang="en-US"> Other income (expense): </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_NonoperatingIncomeExpenseAbstract" xlink:to="lab_572HMJ97544H_us-gaap_NonoperatingIncomeExpenseAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_929216F4IJ579I98G136_us-gaap_InterestExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_InterestExpense" xml:lang="en-US"> Interest Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_InterestExpense" xml:lang="en-US"> Interest expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_InterestExpense" xml:lang="en-US"> Interest expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_InterestExpense" xlink:to="lab_141438H6KL791K10I358_us-gaap_InterestExpense"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet" xlink:label="loc_350FKH75322F_us-gaap_DerivativeGainLossOnDerivativeNet"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeGainLossOnDerivativeNet" xml:lang="en-US"> Derivative, Gain (Loss) On Derivative, Net </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeGainLossOnDerivativeNet" xml:lang="en-US"> Loss on change in fair value of the derivatives </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeGainLossOnDerivativeNet" xml:lang="en-US"> Gain (loss) on change in fair value of derivative liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/disclosureGuidance" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeGainLossOnDerivativeNet" xml:lang="en-US"> Gain (loss) on change in fair value of derivative liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeGainLossOnDerivativeNet" xml:lang="en-US"> Gain/loss on change in fair value of the derivatives </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_DerivativeGainLossOnDerivativeNet" xlink:to="lab_572HMJ97544H_us-gaap_DerivativeGainLossOnDerivativeNet"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_929216F4IJ579I98G136_us-gaap_NonoperatingIncomeExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_NonoperatingIncomeExpense" xml:lang="en-US"> Nonoperating Income (Expense) </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_NonoperatingIncomeExpense" xml:lang="en-US"> Net Other income (expense) </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_NonoperatingIncomeExpense" xml:lang="en-US"> Total other income (expense) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_NonoperatingIncomeExpense" xlink:to="lab_141438H6KL791K10I358_us-gaap_NonoperatingIncomeExpense"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_350FKH75322F_us-gaap_NetIncomeLoss"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_NetIncomeLoss" xml:lang="en-US"> Net Income (Loss) Attributable to Parent </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_NetIncomeLoss" xml:lang="en-US"> Net loss </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_NetIncomeLoss" xml:lang="en-US"> Net income (loss) </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_572HMJ97544H_us-gaap_NetIncomeLoss" xml:lang="en-US"> Net loss </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/disclosureGuidance" xlink:label="lab_572HMJ97544H_us-gaap_NetIncomeLoss" xml:lang="en-US"> Net loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_NetIncomeLoss" xlink:to="lab_572HMJ97544H_us-gaap_NetIncomeLoss"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EarningsPerShareBasicAndDiluted" xlink:label="loc_929216F4IJ579I98G136_us-gaap_EarningsPerShareBasicAndDiluted"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_EarningsPerShareBasicAndDiluted" xml:lang="en-US"> Earnings Per Share, Basic and Diluted </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_EarningsPerShareBasicAndDiluted" xml:lang="en-US"> Net loss per common share - basic and diluted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_EarningsPerShareBasicAndDiluted" xlink:to="lab_141438H6KL791K10I358_us-gaap_EarningsPerShareBasicAndDiluted"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xlink:label="loc_350FKH75322F_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xml:lang="en-US"> Weighted Average Number of Shares Outstanding, Basic and Diluted </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xml:lang="en-US"> Weighted average common shares outstanding - basic and diluted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xlink:to="lab_572HMJ97544H_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_929216F4IJ579I98G136_us-gaap_StatementOfCashFlowsAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_StatementOfCashFlowsAbstract" xml:lang="en-US"> Statement Of Cash Flows [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_StatementOfCashFlowsAbstract" xml:lang="en-US"> Statement of Cash Flows [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_StatementOfCashFlowsAbstract" xlink:to="lab_141438H6KL791K10I358_us-gaap_StatementOfCashFlowsAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_350FKH75322F_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xml:lang="en-US"> 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="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xml:lang="en-US"> Cash Flows From Operating Activities: </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xml:lang="en-US"> CASH FLOWS FROM OPERATING ACTIVITIES: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_929216F4IJ579I98G136_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xml:lang="en-US"> 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="lab_141438H6KL791K10I358_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xml:lang="en-US"> Adjustments to reconcile net loss to net cash provided by (used in) operating activities: </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xml:lang="en-US"> Adjustments to reconcile net 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="loc_929216F4IJ579I98G136_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="lab_141438H6KL791K10I358_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_350FKH75322F_us-gaap_ShareBasedCompensation"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensation" xml:lang="en-US"> Share-based Compensation </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensation" xml:lang="en-US"> Stock-based compensation </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensation" xml:lang="en-US"> Stock-based compensation expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ShareBasedCompensation" xlink:to="lab_572HMJ97544H_us-gaap_ShareBasedCompensation"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_929216F4IJ579I98G136_us-gaap_DepreciationDepletionAndAmortization"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_DepreciationDepletionAndAmortization" xml:lang="en-US"> Depreciation, Depletion and Amortization </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_DepreciationDepletionAndAmortization" xml:lang="en-US"> Depreciation and amortization expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_DepreciationDepletionAndAmortization" xml:lang="en-US"> Depreciation expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_DepreciationDepletionAndAmortization" xlink:to="lab_141438H6KL791K10I358_us-gaap_DepreciationDepletionAndAmortization"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_GainOnChangeInFairValueOfDerivatives" xlink:label="loc_350FKH75322F_atnm_GainOnChangeInFairValueOfDerivatives"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_GainOnChangeInFairValueOfDerivatives" xml:lang="en-US"> Gain On Change In Fair Value Of Derivatives </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_GainOnChangeInFairValueOfDerivatives" xml:lang="en-US"> Gain on change in fair value of derivative liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_GainOnChangeInFairValueOfDerivatives" xml:lang="en-US"> Gain on change in fair value of the derivatives </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_GainOnChangeInFairValueOfDerivatives" xml:lang="en-US"> Gain on change in fair value of the derivatives. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_572HMJ97544H_atnm_GainOnChangeInFairValueOfDerivatives" xml:lang="en-US"> Loss (gain) on change in fair value of derivative liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_GainOnChangeInFairValueOfDerivatives" xlink:to="lab_572HMJ97544H_atnm_GainOnChangeInFairValueOfDerivatives"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_929216F4IJ579I98G136_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xml:lang="en-US"> Increase (Decrease) in Operating Capital [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xml:lang="en-US"> Changes in operating assets and liabilities: </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xml:lang="en-US"> (Increase) decrease in: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="lab_141438H6KL791K10I358_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xlink:label="loc_350FKH75322F_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xml:lang="en-US"> Increase (Decrease) in Operating Assets [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xml:lang="en-US"> (Increase) decrease in: </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xml:lang="en-US"> Increase (decrease) in: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xlink:to="lab_572HMJ97544H_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_929216F4IJ579I98G136_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xml:lang="en-US"> Increase (Decrease) In Prepaid Expense and Other Assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xml:lang="en-US"> Prepaid expenses and other current assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xml:lang="en-US"> Prepaid expenses and other current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:to="lab_141438H6KL791K10I358_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract" xlink:label="loc_350FKH75322F_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract" xml:lang="en-US"> Increase (Decrease) in Operating Liabilities [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract" xml:lang="en-US"> Increase (decrease) in: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract" xlink:to="lab_572HMJ97544H_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties" xlink:label="loc_929216F4IJ579I98G136_us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties" xml:lang="en-US"> Increase (Decrease) in Accounts Payable, Related Parties </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties" xml:lang="en-US"> Accounts payable and accrued expenses-related party </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties" xlink:to="lab_141438H6KL791K10I358_us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="loc_350FKH75322F_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xml:lang="en-US"> Increase (Decrease) in Accounts Payable and Accrued Liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xml:lang="en-US"> Accounts payable and accrued liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xml:lang="en-US"> Accounts payable and accrued expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:to="lab_572HMJ97544H_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_929216F4IJ579I98G136_us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_NetCashProvidedByUsedInOperatingActivities" xml:lang="en-US"> Net Cash Provided By Operating Activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_NetCashProvidedByUsedInOperatingActivities" xml:lang="en-US"> Net cash used in operations </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_NetCashProvidedByUsedInOperatingActivities" xml:lang="en-US"> Net cash used in operating activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_NetCashProvidedByUsedInOperatingActivities" xml:lang="en-US"> Net Cash Used In Operating Activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="lab_141438H6KL791K10I358_us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_350FKH75322F_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xml:lang="en-US"> Investing Activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xml:lang="en-US"> Cash Flows From Investing Activities: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xml:lang="en-US"> Payments to Acquire Property, Plant, and Equipment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xml:lang="en-US"> Purchases of property, plant and equipment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xml:lang="en-US"> Purchase of property and equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="lab_141438H6KL791K10I358_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_PaymentsToAcquireSecurityDeposit" xlink:label="loc_350FKH75322F_atnm_PaymentsToAcquireSecurityDeposit"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_PaymentsToAcquireSecurityDeposit" xml:lang="en-US"> Payments To Acquire Security Deposit </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_PaymentsToAcquireSecurityDeposit" xml:lang="en-US"> Security deposit </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_PaymentsToAcquireSecurityDeposit" xml:lang="en-US"> Cash outflow forpurchase of security deposit. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_572HMJ97544H_atnm_PaymentsToAcquireSecurityDeposit" xml:lang="en-US"> Payment for security deposit </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_PaymentsToAcquireSecurityDeposit" xlink:to="lab_572HMJ97544H_atnm_PaymentsToAcquireSecurityDeposit"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseInRestrictedCash" xlink:label="loc_929216F4IJ579I98G136_us-gaap_IncreaseInRestrictedCash"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncreaseInRestrictedCash" xml:lang="en-US"> Increase in Restricted Cash </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncreaseInRestrictedCash" xml:lang="en-US"> Increase of restricted cash </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncreaseInRestrictedCash" xml:lang="en-US"> Increase of restricted cash </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_IncreaseInRestrictedCash" xlink:to="lab_141438H6KL791K10I358_us-gaap_IncreaseInRestrictedCash"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_350FKH75322F_us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInInvestingActivities" xml:lang="en-US"> Net Cash Provided By (Used In) Investing Activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInInvestingActivities" xml:lang="en-US"> Net cash used in investing activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInInvestingActivities" xml:lang="en-US"> NET CASH USED IN INVESTING ACTIVITIES </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInInvestingActivities" xml:lang="en-US"> Net Cash Used In Investing Activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_929216F4IJ579I98G136_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xml:lang="en-US"> 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="lab_141438H6KL791K10I358_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xml:lang="en-US"> Cash Flows From Financing Activities: </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xml:lang="en-US"> CASH FLOWS FROM FINANCING ACTIVITIES: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="lab_141438H6KL791K10I358_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RepaymentsOfNotesPayable" xlink:label="loc_350FKH75322F_us-gaap_RepaymentsOfNotesPayable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_RepaymentsOfNotesPayable" xml:lang="en-US"> Repayments of Notes Payable </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_RepaymentsOfNotesPayable" xml:lang="en-US"> Payments on note payable </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_572HMJ97544H_us-gaap_RepaymentsOfNotesPayable" xml:lang="en-US"> Payments on note payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_RepaymentsOfNotesPayable" xlink:to="lab_572HMJ97544H_us-gaap_RepaymentsOfNotesPayable"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ProceedsFromIssuanceOfCommonStock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ProceedsFromIssuanceOfCommonStock" xml:lang="en-US"> Proceeds from Issuance of Common Stock </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ProceedsFromIssuanceOfCommonStock" xml:lang="en-US"> Sales of stock, net of offering costs </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ProceedsFromIssuanceOfCommonStock" xml:lang="en-US"> Received proceeds </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ProceedsFromIssuanceOfCommonStock" xml:lang="en-US"> Proceeds from the sale of common stock, net of offering costs </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/disclosureGuidance" xlink:label="lab_141438H6KL791K10I358_us-gaap_ProceedsFromIssuanceOfCommonStock" xml:lang="en-US"> Sales of common stock, net of offering costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:to="lab_141438H6KL791K10I358_us-gaap_ProceedsFromIssuanceOfCommonStock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_350FKH75322F_us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInFinancingActivities" xml:lang="en-US"> Net Cash Provided By (Used In) Financing Activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInFinancingActivities" xml:lang="en-US"> Net cash provided by financing activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInFinancingActivities" xml:lang="en-US"> Net Cash Provided By Financing Activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="lab_572HMJ97544H_us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_929216F4IJ579I98G136_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xml:lang="en-US"> Cash and Cash Equivalents, Period Increase (Decrease) </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xml:lang="en-US"> Net increase (decrease) in cash </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xml:lang="en-US"> INCREASE IN CASH AND CASH EQUIVALENTS </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xml:lang="en-US"> Net change in cash and cash equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="lab_141438H6KL791K10I358_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="loc_350FKH75322F_us-gaap_SupplementalCashFlowInformationAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_SupplementalCashFlowInformationAbstract" xml:lang="en-US"> Supplemental Cash Flow Information [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_SupplementalCashFlowInformationAbstract" xml:lang="en-US"> Supplemental disclosures of cash flow information: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="lab_572HMJ97544H_us-gaap_SupplementalCashFlowInformationAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestPaid" xlink:label="loc_929216F4IJ579I98G136_us-gaap_InterestPaid"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_InterestPaid" xml:lang="en-US"> Interest Paid </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_InterestPaid" xml:lang="en-US"> Cash paid for interest </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_InterestPaid" xlink:to="lab_141438H6KL791K10I358_us-gaap_InterestPaid"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxesPaid" xlink:label="loc_350FKH75322F_us-gaap_IncomeTaxesPaid"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_IncomeTaxesPaid" xml:lang="en-US"> Income Taxes Paid </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_IncomeTaxesPaid" xml:lang="en-US"> Cash paid for income taxes </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_IncomeTaxesPaid" xml:lang="en-US"> Cash paid for taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_IncomeTaxesPaid" xlink:to="lab_572HMJ97544H_us-gaap_IncomeTaxesPaid"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:label="loc_929216F4IJ579I98G136_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xml:lang="en-US"> Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xml:lang="en-US"> Supplemental disclosure of non-cash investing and financing activities: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:to="lab_141438H6KL791K10I358_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_TransferWarrantDerivativeFromLiabilityToEquityClassificationNoncash" xlink:label="loc_350FKH75322F_atnm_TransferWarrantDerivativeFromLiabilityToEquityClassificationNoncash"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_TransferWarrantDerivativeFromLiabilityToEquityClassificationNoncash" xml:lang="en-US"> Transfer Warrant Derivative From Liability To Equity Classification Noncash </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_TransferWarrantDerivativeFromLiabilityToEquityClassificationNoncash" xml:lang="en-US"> Transfer of warrant derivatives from liability to equity classification </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_TransferWarrantDerivativeFromLiabilityToEquityClassificationNoncash" xml:lang="en-US"> Transfer warrant derivatives from liability to equity classification </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_TransferWarrantDerivativeFromLiabilityToEquityClassificationNoncash" xml:lang="en-US"> Transfer warrant derivative from liability to equity classification non cash activities. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_TransferWarrantDerivativeFromLiabilityToEquityClassificationNoncash" xlink:to="lab_572HMJ97544H_atnm_TransferWarrantDerivativeFromLiabilityToEquityClassificationNoncash"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_CashlessExerciseOfWarrants" xlink:label="loc_929216F4IJ579I98G136_atnm_CashlessExerciseOfWarrants"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_CashlessExerciseOfWarrants" xml:lang="en-US"> Cashless Exercise Of Warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_CashlessExerciseOfWarrants" xml:lang="en-US"> Cashless exercise of warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_CashlessExerciseOfWarrants" xml:lang="en-US"> This element refer to non cash cashless exercise of warrant. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_CashlessExerciseOfWarrants" xlink:to="lab_141438H6KL791K10I358_atnm_CashlessExerciseOfWarrants"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_350FKH75322F_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xml:lang="en-US"> Description of Business and Summary of Significant Accounting Policies [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xml:lang="en-US"> Organization, Consolidation and Presentation of Financial Statements [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="lab_572HMJ97544H_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xml:lang="en-US"> Organization, Consolidation and Presentation Of Financial Statements Disclosure and Significant Accounting Policies [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xml:lang="en-US"> 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="loc_929216F4IJ579I98G136_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionsAbstract" xlink:label="loc_350FKH75322F_us-gaap_RelatedPartyTransactionsAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_RelatedPartyTransactionsAbstract" xml:lang="en-US"> Related Party Transactions [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_RelatedPartyTransactionsAbstract" xml:lang="en-US"> Related Party Transactions [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_RelatedPartyTransactionsAbstract" xlink:to="lab_572HMJ97544H_us-gaap_RelatedPartyTransactionsAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_RelatedPartyTransactionsDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xml:lang="en-US"> Related Party Transactions Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xml:lang="en-US"> Related Party Transactions </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_RelatedPartyTransactionsDisclosureTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract" xlink:label="loc_350FKH75322F_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract" xml:lang="en-US"> Prepaid Expenses and Other Current Assets [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract" xlink:to="lab_572HMJ97544H_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_PrepaidExpensesAndOtherCurrentAssetsDisclosureTextBlock" xlink:label="loc_929216F4IJ579I98G136_atnm_PrepaidExpensesAndOtherCurrentAssetsDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_PrepaidExpensesAndOtherCurrentAssetsDisclosureTextBlock" xml:lang="en-US"> Prepaid Expenses And Other Current Assets Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_PrepaidExpensesAndOtherCurrentAssetsDisclosureTextBlock" xml:lang="en-US"> Prepaid Expenses and Other Current Assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_PrepaidExpensesAndOtherCurrentAssetsDisclosureTextBlock" xml:lang="en-US"> The entire disclosure for other current asset. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_PrepaidExpensesAndOtherCurrentAssetsDisclosureTextBlock" xlink:to="lab_141438H6KL791K10I358_atnm_PrepaidExpensesAndOtherCurrentAssetsDisclosureTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="loc_350FKH75322F_us-gaap_PropertyPlantAndEquipmentAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentAbstract" xml:lang="en-US"> Property and Equipment [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentAbstract" xml:lang="en-US"> Property, Plant and Equipment [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_PropertyPlantAndEquipmentAbstract" xlink:to="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xml:lang="en-US"> Property, Plant and Equipment Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xml:lang="en-US"> Property and Equipment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xml:lang="en-US"> Property and Equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:label="loc_350FKH75322F_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xml:lang="en-US"> Derivatives [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xml:lang="en-US"> Derivative Instruments and Hedging Activities Disclosure [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:to="lab_572HMJ97544H_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xml:lang="en-US"> Derivative Instruments and Hedging Activities Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xml:lang="en-US"> Derivatives </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_350FKH75322F_us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xml:lang="en-US"> Commitments and Contingencies [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xml:lang="en-US"> Commitments and Contingencies Disclosure [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="lab_572HMJ97544H_us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xml:lang="en-US"> Commitments and Contingencies Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xml:lang="en-US"> Commitments and Contingencies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityAbstract" xlink:label="loc_350FKH75322F_us-gaap_EquityAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_EquityAbstract" xml:lang="en-US"> Equity [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_EquityAbstract" xml:lang="en-US"> Equity [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_EquityAbstract" xlink:to="lab_572HMJ97544H_us-gaap_EquityAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_StockholdersEquityNoteDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockholdersEquityNoteDisclosureTextBlock" xml:lang="en-US"> Stockholders' Equity Note Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockholdersEquityNoteDisclosureTextBlock" xml:lang="en-US"> Equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_StockholdersEquityNoteDisclosureTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="loc_350FKH75322F_us-gaap_SubsequentEventsAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_SubsequentEventsAbstract" xml:lang="en-US"> Subsequent Events [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_SubsequentEventsAbstract" xlink:to="lab_572HMJ97544H_us-gaap_SubsequentEventsAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_SubsequentEventsTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_SubsequentEventsTextBlock" xml:lang="en-US"> Subsequent Events [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SubsequentEventsTextBlock" xml:lang="en-US"> Subsequent Events </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_SubsequentEventsTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_SubsequentEventsTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NatureOfOperations" xlink:label="loc_350FKH75322F_us-gaap_NatureOfOperations"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_NatureOfOperations" xml:lang="en-US"> Nature of Operations [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_NatureOfOperations" xml:lang="en-US"> Nature of Business </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_NatureOfOperations" xlink:to="lab_572HMJ97544H_us-gaap_NatureOfOperations"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_BasisOfAccountingPolicyPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xml:lang="en-US"> Basis of Accounting, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xml:lang="en-US"> Basis of Presentation - Unaudited Interim Financial Information </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_BasisOfAccountingPolicyPolicyTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:label="loc_350FKH75322F_us-gaap_ConsolidationPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ConsolidationPolicyTextBlock" xml:lang="en-US"> Consolidation, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ConsolidationPolicyTextBlock" xml:lang="en-US"> Principles of Consolidation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ConsolidationPolicyTextBlock" xlink:to="lab_572HMJ97544H_us-gaap_ConsolidationPolicyTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_929216F4IJ579I98G136_us-gaap_UseOfEstimates"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_UseOfEstimates" xml:lang="en-US"> Use of Estimates, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_UseOfEstimates" xml:lang="en-US"> Use of Estimates in Financial Statement Presentation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_UseOfEstimates" xlink:to="lab_141438H6KL791K10I358_us-gaap_UseOfEstimates"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="loc_350FKH75322F_us-gaap_CashAndCashEquivalentsPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_CashAndCashEquivalentsPolicyTextBlock" xml:lang="en-US"> Cash and Cash Equivalents, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_CashAndCashEquivalentsPolicyTextBlock" xml:lang="en-US"> Cash and Cash Equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:to="lab_572HMJ97544H_us-gaap_CashAndCashEquivalentsPolicyTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xml:lang="en-US"> Property, Plant and Equipment, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xml:lang="en-US"> Property and Equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:label="loc_350FKH75322F_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xml:lang="en-US"> Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xml:lang="en-US"> Impairment of Long-Lived Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:to="lab_572HMJ97544H_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativesPolicyTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_DerivativesPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_DerivativesPolicyTextBlock" xml:lang="en-US"> Derivatives, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_DerivativesPolicyTextBlock" xml:lang="en-US"> Derivatives </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_DerivativesPolicyTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_DerivativesPolicyTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:label="loc_350FKH75322F_us-gaap_FairValueOfFinancialInstrumentsPolicy"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_FairValueOfFinancialInstrumentsPolicy" xml:lang="en-US"> Fair Value of Financial Instruments, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_FairValueOfFinancialInstrumentsPolicy" xml:lang="en-US"> Fair Value of Financial Instruments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:to="lab_572HMJ97544H_us-gaap_FairValueOfFinancialInstrumentsPolicy"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_IncomeTaxPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncomeTaxPolicyTextBlock" xml:lang="en-US"> Income Tax, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_IncomeTaxPolicyTextBlock" xml:lang="en-US"> Income Taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_IncomeTaxPolicyTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_IncomeTaxPolicyTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ResearchAndDevelopmentExpensePolicy" xlink:label="loc_350FKH75322F_us-gaap_ResearchAndDevelopmentExpensePolicy"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ResearchAndDevelopmentExpensePolicy" xml:lang="en-US"> Research and Development Expense, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ResearchAndDevelopmentExpensePolicy" xml:lang="en-US"> Research and Development Costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ResearchAndDevelopmentExpensePolicy" xlink:to="lab_572HMJ97544H_us-gaap_ResearchAndDevelopmentExpensePolicy"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CompensationRelatedCostsPolicyTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_CompensationRelatedCostsPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_CompensationRelatedCostsPolicyTextBlock" xml:lang="en-US"> Compensation Related Costs, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_CompensationRelatedCostsPolicyTextBlock" xml:lang="en-US"> Share-Based Payments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_CompensationRelatedCostsPolicyTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_CompensationRelatedCostsPolicyTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="loc_350FKH75322F_us-gaap_EarningsPerSharePolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_EarningsPerSharePolicyTextBlock" xml:lang="en-US"> Earnings Per Share, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_EarningsPerSharePolicyTextBlock" xml:lang="en-US"> Earnings (Loss) Per Common Share </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_EarningsPerSharePolicyTextBlock" xlink:to="lab_572HMJ97544H_us-gaap_EarningsPerSharePolicyTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventsPolicyPolicyTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_SubsequentEventsPolicyPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_SubsequentEventsPolicyPolicyTextBlock" xml:lang="en-US"> Subsequent Events, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SubsequentEventsPolicyPolicyTextBlock" xml:lang="en-US"> Subsequent Events </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_SubsequentEventsPolicyPolicyTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_SubsequentEventsPolicyPolicyTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_350FKH75322F_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xml:lang="en-US"> New Accounting Pronouncements, Policy [Policy Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xml:lang="en-US"> Recent Accounting Pronouncements </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:to="lab_572HMJ97544H_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock" xml:lang="en-US"> Fair Value, Liabilities Measured on Recurring Basis [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock" xml:lang="en-US"> Summary of set forth liabilities measured at fair value on a recurring basis </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock" xlink:label="loc_350FKH75322F_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock" xml:lang="en-US"> Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock" xml:lang="en-US"> Schedule of antidilutive securities excluded from computation of earnings per share </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock" xlink:to="lab_572HMJ97544H_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock" xml:lang="en-US"> Schedule Of Related Party Transactions [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock" xml:lang="en-US"> Summary of milestone payments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock" xlink:label="loc_350FKH75322F_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock" xml:lang="en-US"> Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock" xml:lang="en-US"> Summary of prepaid expenses and other current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock" xlink:to="lab_572HMJ97544H_us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentTextBlock" xml:lang="en-US"> Property, Plant and Equipment [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentTextBlock" xml:lang="en-US"> Summary of property and equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDerivativeInstrumentsTextBlock" xlink:label="loc_350FKH75322F_us-gaap_ScheduleOfDerivativeInstrumentsTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ScheduleOfDerivativeInstrumentsTextBlock" xml:lang="en-US"> Schedule Of Derivative Instruments [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ScheduleOfDerivativeInstrumentsTextBlock" xml:lang="en-US"> Schedule of derivative warrant instruments activity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ScheduleOfDerivativeInstrumentsTextBlock" xlink:to="lab_572HMJ97544H_us-gaap_ScheduleOfDerivativeInstrumentsTextBlock"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_FairValueOfDerivativeWarrantsOnBasisOfValuationModelTableTextBlock" xlink:label="loc_929216F4IJ579I98G136_atnm_FairValueOfDerivativeWarrantsOnBasisOfValuationModelTableTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_FairValueOfDerivativeWarrantsOnBasisOfValuationModelTableTextBlock" xml:lang="en-US"> Fair Value Of Derivative Warrants On Basis Of Valuation Model [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_FairValueOfDerivativeWarrantsOnBasisOfValuationModelTableTextBlock" xml:lang="en-US"> Summary of fair values of derivative warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_FairValueOfDerivativeWarrantsOnBasisOfValuationModelTableTextBlock" xml:lang="en-US"> Fair value of derivative warrants on basis of valuation model. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_FairValueOfDerivativeWarrantsOnBasisOfValuationModelTableTextBlock" xlink:to="lab_141438H6KL791K10I358_atnm_FairValueOfDerivativeWarrantsOnBasisOfValuationModelTableTextBlock"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_MilestonePaymentsMilestoneMethodTableTextBlock" xlink:label="loc_350FKH75322F_atnm_MilestonePaymentsMilestoneMethodTableTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_MilestonePaymentsMilestoneMethodTableTextBlock" xml:lang="en-US"> Milestone Payments Milestone Method [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_MilestonePaymentsMilestoneMethodTableTextBlock" xml:lang="en-US"> Summary of milestone payments </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_MilestonePaymentsMilestoneMethodTableTextBlock" xml:lang="en-US"> Milestone payments milestone method. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_MilestonePaymentsMilestoneMethodTableTextBlock" xlink:to="lab_572HMJ97544H_atnm_MilestonePaymentsMilestoneMethodTableTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" xml:lang="en-US"> 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="lab_141438H6KL791K10I358_us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" xml:lang="en-US"> Schedule of future minimum obligations on the lease </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" xlink:to="lab_141438H6KL791K10I358_us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_350FKH75322F_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xml:lang="en-US"> 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/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xml:lang="en-US"> Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] </label>
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<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award [Line Items] </label>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:label="loc_350FKH75322F_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock"/>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_929216F4IJ579I98G136_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xml:lang="en-US"> Fair Value Measurements, Recurring and Nonrecurring [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xml:lang="en-US"> Fair Value Measurements, Recurring and Nonrecurring [Table] </label>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_929216F4IJ579I98G136_us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_929216F4IJ579I98G136_us-gaap_FairValueInputsLevel2Member"/>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_350FKH75322F_us-gaap_FairValueInputsLevel3Member"/>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_929216F4IJ579I98G136_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
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<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xml:lang="en-US"> Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] </label>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable" xlink:label="loc_350FKH75322F_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="loc_929216F4IJ579I98G136_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
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<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xml:lang="en-US"> Antidilutive Securities [Axis] </label>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="loc_350FKH75322F_us-gaap_AntidilutiveSecuritiesNameDomain"/>
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<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_AntidilutiveSecuritiesNameDomain" xlink:to="lab_572HMJ97544H_us-gaap_AntidilutiveSecuritiesNameDomain"/>
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<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_929216F4IJ579I98G136_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xml:lang="en-US"> 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="lab_141438H6KL791K10I358_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xml:lang="en-US"> Total </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xml:lang="en-US"> Potentially issuable shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="lab_141438H6KL791K10I358_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_350FKH75322F_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xml:lang="en-US"> Property, Plant and Equipment [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xml:lang="en-US"> Schedule of Property, Plant and Equipment [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="lab_572HMJ97544H_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentByTypeAxis" xml:lang="en-US"> Property, Plant and Equipment, Type [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentByTypeAxis" xml:lang="en-US"> Property, Plant and Equipment, Type [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_350FKH75322F_us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentTypeDomain" xml:lang="en-US"> Property, Plant and Equipment, Type [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentTypeDomain" xml:lang="en-US"> Property, Plant and Equipment, Type [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MachineryAndEquipmentMember" xlink:label="loc_929216F4IJ579I98G136_us-gaap_MachineryAndEquipmentMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_MachineryAndEquipmentMember" xml:lang="en-US"> Machinery and Equipment [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_MachineryAndEquipmentMember" xml:lang="en-US"> Machinery and equipment [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_MachineryAndEquipmentMember" xlink:to="lab_141438H6KL791K10I358_us-gaap_MachineryAndEquipmentMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FurnitureAndFixturesMember" xlink:label="loc_350FKH75322F_us-gaap_FurnitureAndFixturesMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_FurnitureAndFixturesMember" xml:lang="en-US"> Furniture and Fixtures [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_FurnitureAndFixturesMember" xml:lang="en-US"> Furniture and fixtures [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_FurnitureAndFixturesMember" xlink:to="lab_572HMJ97544H_us-gaap_FurnitureAndFixturesMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_929216F4IJ579I98G136_us-gaap_SubsequentEventTypeAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_SubsequentEventTypeAxis" xml:lang="en-US"> Subsequent Event Type [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_SubsequentEventTypeAxis" xlink:to="lab_141438H6KL791K10I358_us-gaap_SubsequentEventTypeAxis"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_350FKH75322F_us-gaap_SubsequentEventTypeDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_SubsequentEventTypeDomain" xml:lang="en-US"> Subsequent Event Type [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_SubsequentEventTypeDomain" xlink:to="lab_572HMJ97544H_us-gaap_SubsequentEventTypeDomain"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="loc_929216F4IJ579I98G136_us-gaap_SubsequentEventMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_SubsequentEventMember" xml:lang="en-US"> Subsequent Event [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SubsequentEventMember" xml:lang="en-US"> Subsequent Event [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SubsequentEventMember" xml:lang="en-US"> Subsequent Events [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_SubsequentEventMember" xlink:to="lab_141438H6KL791K10I358_us-gaap_SubsequentEventMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_350FKH75322F_us-gaap_PropertyPlantAndEquipmentLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentLineItems" xml:lang="en-US"> Property, Plant and Equipment [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentLineItems" xml:lang="en-US"> Property, Plant and Equipment [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentLineItems"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesTextualAbstract" xlink:label="loc_929216F4IJ579I98G136_atnm_DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesTextualAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesTextualAbstract" xml:lang="en-US"> Description Of Business and Summary Of Significant Accounting Policies Textual [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesTextualAbstract" xml:lang="en-US"> Description of Business and Summary of Significant Accounting Policies (Textual) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesTextualAbstract" xlink:to="lab_141438H6KL791K10I358_atnm_DescriptionOfBusinessAndSummaryOfSignificantAccountingPoliciesTextualAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives" xlink:label="loc_350FKH75322F_us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives" xml:lang="en-US"> Property, Plant and Equipment, Estimated Useful Lives </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives" xml:lang="en-US"> Estimated useful lives </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives" xlink:to="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentEstimatedUsefulLives"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDepreciationMethods" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentDepreciationMethods"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentDepreciationMethods" xml:lang="en-US"> Property, Plant and Equipment, Depreciation Methods </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentDepreciationMethods" xml:lang="en-US"> Property and equipment depreciation method </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentDepreciationMethods" xlink:to="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentDepreciationMethods"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_DoseEscalationStudyDescription" xlink:label="loc_350FKH75322F_atnm_DoseEscalationStudyDescription"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_DoseEscalationStudyDescription" xml:lang="en-US"> Dose Escalation Study Description </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_DoseEscalationStudyDescription" xml:lang="en-US"> Dose escalation study description </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_DoseEscalationStudyDescription" xml:lang="en-US"> Dose escalation study description. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_DoseEscalationStudyDescription" xlink:to="lab_572HMJ97544H_atnm_DoseEscalationStudyDescription"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xml:lang="en-US"> Schedule of Related Party Transactions, by Related Party [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xml:lang="en-US"> Schedule of Related Party Transactions, by Related Party [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="lab_141438H6KL791K10I358_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_350FKH75322F_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xml:lang="en-US"> Related Party [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xml:lang="en-US"> Related Party [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="lab_572HMJ97544H_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_929216F4IJ579I98G136_us-gaap_RelatedPartyDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_RelatedPartyDomain" xml:lang="en-US"> Related Party [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_RelatedPartyDomain" xml:lang="en-US"> Related Party [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_RelatedPartyDomain" xlink:to="lab_141438H6KL791K10I358_us-gaap_RelatedPartyDomain"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_MemorialSloanKetteringCancerCenterMember" xlink:label="loc_350FKH75322F_atnm_MemorialSloanKetteringCancerCenterMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_MemorialSloanKetteringCancerCenterMember" xml:lang="en-US"> Memorial Sloan Kettering Cancer Center [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_MemorialSloanKetteringCancerCenterMember" xml:lang="en-US"> MSKCC [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_MemorialSloanKetteringCancerCenterMember" xml:lang="en-US"> MSKCC [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_MemorialSloanKetteringCancerCenterMember" xml:lang="en-US"> Memorial sloan kettering cancer center. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/disclosureGuidance" xlink:label="lab_572HMJ97544H_atnm_MemorialSloanKetteringCancerCenterMember" xml:lang="en-US"> Memorial Sloan-Kettering Cancer Center [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_MemorialSloanKetteringCancerCenterMember" xlink:to="lab_572HMJ97544H_atnm_MemorialSloanKetteringCancerCenterMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:label="loc_929216F4IJ579I98G136_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xml:lang="en-US"> Category Of Item Purchased [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xml:lang="en-US"> Category of Item Purchased [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:to="lab_141438H6KL791K10I358_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" xlink:label="loc_350FKH75322F_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" xml:lang="en-US"> Long-Term Purchase Commitment, Category Of Item Purchased [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" xml:lang="en-US"> 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="loc_350FKH75322F_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" xlink:to="lab_572HMJ97544H_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_NewDrugApplicationMember" xlink:label="loc_929216F4IJ579I98G136_atnm_NewDrugApplicationMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_NewDrugApplicationMember" xml:lang="en-US"> New Drug Application [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_NewDrugApplicationMember" xml:lang="en-US"> New Drug Application [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_NewDrugApplicationMember" xml:lang="en-US"> New drug application. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_NewDrugApplicationMember" xlink:to="lab_141438H6KL791K10I358_atnm_NewDrugApplicationMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ReceiptOfRegulatoryApprovalFromUSFdaMember" xlink:label="loc_350FKH75322F_atnm_ReceiptOfRegulatoryApprovalFromUSFdaMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_ReceiptOfRegulatoryApprovalFromUSFdaMember" xml:lang="en-US"> Receipt Of Regulatory Approval From U S Fda [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_ReceiptOfRegulatoryApprovalFromUSFdaMember" xml:lang="en-US"> Receipt of Regulatory Approval From U.S. FDA [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_ReceiptOfRegulatoryApprovalFromUSFdaMember" xml:lang="en-US"> Receipt of regulatory approval from U.S. FDA. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_ReceiptOfRegulatoryApprovalFromUSFdaMember" xlink:to="lab_572HMJ97544H_atnm_ReceiptOfRegulatoryApprovalFromUSFdaMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_929216F4IJ579I98G136_us-gaap_RelatedPartyTransactionLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_RelatedPartyTransactionLineItems" xml:lang="en-US"> Related Party Transaction [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_RelatedPartyTransactionLineItems" xml:lang="en-US"> Related Party Transaction [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_RelatedPartyTransactionLineItems" xlink:to="lab_141438H6KL791K10I358_us-gaap_RelatedPartyTransactionLineItems"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrentAbstract" xlink:label="loc_350FKH75322F_us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrentAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrentAbstract" xml:lang="en-US"> Related Party Transaction, Due From (To) Related Party, Current [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrentAbstract" xml:lang="en-US"> Summary of milestone payments related to related party </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrentAbstract" xlink:to="lab_572HMJ97544H_us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrentAbstract"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_RelatedPartyMilestonePayment" xlink:label="loc_929216F4IJ579I98G136_atnm_RelatedPartyMilestonePayment"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_RelatedPartyMilestonePayment" xml:lang="en-US"> Related Party Milestone Payment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_RelatedPartyMilestonePayment" xml:lang="en-US"> Milestone payments </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_RelatedPartyMilestonePayment" xml:lang="en-US"> Related party milestone payment. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_RelatedPartyMilestonePayment" xlink:to="lab_141438H6KL791K10I358_atnm_RelatedPartyMilestonePayment"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis" xlink:label="loc_350FKH75322F_us-gaap_SubsidiarySaleOfStockAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_SubsidiarySaleOfStockAxis" xml:lang="en-US"> Sale of Stock [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_SubsidiarySaleOfStockAxis" xml:lang="en-US"> Subsidiary, Sale of Stock [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_SubsidiarySaleOfStockAxis" xlink:to="lab_572HMJ97544H_us-gaap_SubsidiarySaleOfStockAxis"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain" xlink:label="loc_929216F4IJ579I98G136_us-gaap_SaleOfStockNameOfTransactionDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_SaleOfStockNameOfTransactionDomain" xml:lang="en-US"> Sale of Stock [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SaleOfStockNameOfTransactionDomain" xml:lang="en-US"> Sale of Stock, Name of Transaction [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_SaleOfStockNameOfTransactionDomain" xlink:to="lab_141438H6KL791K10I358_us-gaap_SaleOfStockNameOfTransactionDomain"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_PlacementAgentMember" xlink:label="loc_350FKH75322F_atnm_PlacementAgentMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_PlacementAgentMember" xml:lang="en-US"> Placement Agent [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_PlacementAgentMember" xml:lang="en-US"> Placement Agent [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_PlacementAgentMember" xml:lang="en-US"> Placement agent. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_PlacementAgentMember" xlink:to="lab_572HMJ97544H_atnm_PlacementAgentMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_RelatedPartyTransactionsTextualAbstract" xlink:label="loc_929216F4IJ579I98G136_atnm_RelatedPartyTransactionsTextualAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_RelatedPartyTransactionsTextualAbstract" xml:lang="en-US"> Related Party Transactions Textual [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_RelatedPartyTransactionsTextualAbstract" xml:lang="en-US"> Related Party Transactions (Textual) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_RelatedPartyTransactionsTextualAbstract" xlink:to="lab_141438H6KL791K10I358_atnm_RelatedPartyTransactionsTextualAbstract"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_DescriptionOfReceivablesOfPlacementAgentForServices" xlink:label="loc_350FKH75322F_atnm_DescriptionOfReceivablesOfPlacementAgentForServices"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_DescriptionOfReceivablesOfPlacementAgentForServices" xml:lang="en-US"> Description Of Receivables Of Placement Agent For Services </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_DescriptionOfReceivablesOfPlacementAgentForServices" xml:lang="en-US"> Description of receivables of placement agent for services </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_DescriptionOfReceivablesOfPlacementAgentForServices" xml:lang="en-US"> Description of receivables of placement agent for services. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_DescriptionOfReceivablesOfPlacementAgentForServices" xlink:to="lab_572HMJ97544H_atnm_DescriptionOfReceivablesOfPlacementAgentForServices"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_DescriptionOfWarrantsReceivablesByPlacement" xlink:label="loc_929216F4IJ579I98G136_atnm_DescriptionOfWarrantsReceivablesByPlacement"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_DescriptionOfWarrantsReceivablesByPlacement" xml:lang="en-US"> Description Of Warrants Receivables By Placement </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_DescriptionOfWarrantsReceivablesByPlacement" xml:lang="en-US"> Description of warrants receivables by placement </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_DescriptionOfWarrantsReceivablesByPlacement" xml:lang="en-US"> Description of warrants receivables by placement. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_DescriptionOfWarrantsReceivablesByPlacement" xlink:to="lab_141438H6KL791K10I358_atnm_DescriptionOfWarrantsReceivablesByPlacement"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_PeriodicFeeForFinancialAdvisoryServices" xlink:label="loc_350FKH75322F_atnm_PeriodicFeeForFinancialAdvisoryServices"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_PeriodicFeeForFinancialAdvisoryServices" xml:lang="en-US"> Periodic Fee For Financial Advisory Services </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_PeriodicFeeForFinancialAdvisoryServices" xml:lang="en-US"> Monthly fee for financial advisory services </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_PeriodicFeeForFinancialAdvisoryServices" xml:lang="en-US"> Periodic fee for financial advisory services. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_PeriodicFeeForFinancialAdvisoryServices" xlink:to="lab_572HMJ97544H_atnm_PeriodicFeeForFinancialAdvisoryServices"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RepaymentsOfDebt" xlink:label="loc_929216F4IJ579I98G136_us-gaap_RepaymentsOfDebt"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_RepaymentsOfDebt" xml:lang="en-US"> Repayments of Debt </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_RepaymentsOfDebt" xml:lang="en-US"> Repayment of amount paid to placement agent </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_RepaymentsOfDebt" xlink:to="lab_141438H6KL791K10I358_us-gaap_RepaymentsOfDebt"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ArtistAdvancesAndRoyaltyGuaranteesCommitments" xlink:label="loc_350FKH75322F_us-gaap_ArtistAdvancesAndRoyaltyGuaranteesCommitments"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ArtistAdvancesAndRoyaltyGuaranteesCommitments" xml:lang="en-US"> Artist Advances and Royalty Guarantees, Commitments </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ArtistAdvancesAndRoyaltyGuaranteesCommitments" xml:lang="en-US"> Royalty description </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ArtistAdvancesAndRoyaltyGuaranteesCommitments" xlink:to="lab_572HMJ97544H_us-gaap_ArtistAdvancesAndRoyaltyGuaranteesCommitments"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:label="loc_929216F4IJ579I98G136_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xml:lang="en-US"> Sale of Stock, Number of Shares Issued in Transaction </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xml:lang="en-US"> Number of shares common stock </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xml:lang="en-US"> Shares purchased by investors </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xml:lang="en-US"> Number of common shares issued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:to="lab_141438H6KL791K10I358_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SaleOfStockDescriptionOfTransaction" xlink:label="loc_350FKH75322F_us-gaap_SaleOfStockDescriptionOfTransaction"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_SaleOfStockDescriptionOfTransaction" xml:lang="en-US"> Sale of Stock, Description of Transaction </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_SaleOfStockDescriptionOfTransaction" xml:lang="en-US"> Aggregate offering amount of securities sold to investors </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_SaleOfStockDescriptionOfTransaction" xml:lang="en-US"> Aggregate offering amount of securities sold to investors </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/disclosureGuidance" xlink:label="lab_572HMJ97544H_us-gaap_SaleOfStockDescriptionOfTransaction" xml:lang="en-US"> Sale of stock, Description </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_SaleOfStockDescriptionOfTransaction" xlink:to="lab_572HMJ97544H_us-gaap_SaleOfStockDescriptionOfTransaction"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaintenanceCosts" xlink:label="loc_929216F4IJ579I98G136_us-gaap_MaintenanceCosts"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_MaintenanceCosts" xml:lang="en-US"> Maintenance Costs </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_MaintenanceCosts" xml:lang="en-US"> Maintenance fees </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_MaintenanceCosts" xlink:to="lab_141438H6KL791K10I358_us-gaap_MaintenanceCosts"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DueToRelatedPartiesCurrentAndNoncurrent" xlink:label="loc_350FKH75322F_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent" xml:lang="en-US"> Due to Related Parties </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent" xml:lang="en-US"> Due of maintenance fees and research cost </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent" xlink:to="lab_572HMJ97544H_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PrepaidInsurance" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PrepaidInsurance"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PrepaidInsurance" xml:lang="en-US"> Prepaid Insurance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PrepaidInsurance" xml:lang="en-US"> Prepaid insurance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PrepaidInsurance" xlink:to="lab_141438H6KL791K10I358_us-gaap_PrepaidInsurance"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_PrepaidClinicalTrialExpenses" xlink:label="loc_350FKH75322F_atnm_PrepaidClinicalTrialExpenses"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_PrepaidClinicalTrialExpenses" xml:lang="en-US"> Prepaid Clinical Trial Expenses </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_PrepaidClinicalTrialExpenses" xml:lang="en-US"> Prepaid clinical trial expenses </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_PrepaidClinicalTrialExpenses" xml:lang="en-US"> Prepaid clinical trial expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_PrepaidClinicalTrialExpenses" xlink:to="lab_572HMJ97544H_atnm_PrepaidClinicalTrialExpenses"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherPrepaidExpenseCurrent" xlink:label="loc_929216F4IJ579I98G136_us-gaap_OtherPrepaidExpenseCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_OtherPrepaidExpenseCurrent" xml:lang="en-US"> Other Prepaid Expense, Current </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_OtherPrepaidExpenseCurrent" xml:lang="en-US"> Other prepaid expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_OtherPrepaidExpenseCurrent" xlink:to="lab_141438H6KL791K10I358_us-gaap_OtherPrepaidExpenseCurrent"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_LabEquipmentMember" xlink:label="loc_350FKH75322F_atnm_LabEquipmentMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_LabEquipmentMember" xml:lang="en-US"> Lab Equipment [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_LabEquipmentMember" xml:lang="en-US"> Lab equipment [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_LabEquipmentMember" xml:lang="en-US"> Lab equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_LabEquipmentMember" xlink:to="lab_572HMJ97544H_atnm_LabEquipmentMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OfficeEquipmentMember" xlink:label="loc_929216F4IJ579I98G136_us-gaap_OfficeEquipmentMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_OfficeEquipmentMember" xml:lang="en-US"> Office Equipment [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_OfficeEquipmentMember" xml:lang="en-US"> Office equipment [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_OfficeEquipmentMember" xlink:to="lab_141438H6KL791K10I358_us-gaap_OfficeEquipmentMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract" xlink:label="loc_350FKH75322F_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract" xml:lang="en-US"> Property, Plant and Equipment, Net, By Type [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract" xml:lang="en-US"> Summary of property and equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract" xlink:to="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentUsefulLife" xml:lang="en-US"> Property, Plant and Equipment, Useful Life </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentUsefulLife" xml:lang="en-US"> Useful Lives </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:to="lab_141438H6KL791K10I358_us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_350FKH75322F_us-gaap_PropertyPlantAndEquipmentGross"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentGross" xml:lang="en-US"> Property, Plant and Equipment, Gross </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentGross" xml:lang="en-US"> Property and equipment, gross </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentGross" xml:lang="en-US"> Equipment and parts </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentGross" xml:lang="en-US"> Office equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_PropertyPlantAndEquipmentGross" xlink:to="lab_572HMJ97544H_us-gaap_PropertyPlantAndEquipmentGross"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_929216F4IJ579I98G136_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xml:lang="en-US"> Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xml:lang="en-US"> Less: accumulated depreciation </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xml:lang="en-US"> Less: accumulated depreciation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:to="lab_141438H6KL791K10I358_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_PropertyAndEquipmentTextualAbstract" xlink:label="loc_350FKH75322F_atnm_PropertyAndEquipmentTextualAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_PropertyAndEquipmentTextualAbstract" xml:lang="en-US"> Property and Equipment Textual [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_PropertyAndEquipmentTextualAbstract" xml:lang="en-US"> Property and Equipment (Textual) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_PropertyAndEquipmentTextualAbstract" xlink:to="lab_572HMJ97544H_atnm_PropertyAndEquipmentTextualAbstract"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_DerivativeWarrant" xlink:label="loc_929216F4IJ579I98G136_atnm_DerivativeWarrant"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_DerivativeWarrant" xml:lang="en-US"> Derivative Warrant </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_141438H6KL791K10I358_atnm_DerivativeWarrant" xml:lang="en-US"> Beginning balance, Shares subject to warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_141438H6KL791K10I358_atnm_DerivativeWarrant" xml:lang="en-US"> Ending Balance, Shares subject to warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_DerivativeWarrant" xml:lang="en-US"> Derivative warrant. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_DerivativeWarrant" xlink:to="lab_141438H6KL791K10I358_atnm_DerivativeWarrant"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ModificationOfWarrantsShares" xlink:label="loc_350FKH75322F_atnm_ModificationOfWarrantsShares"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_ModificationOfWarrantsShares" xml:lang="en-US"> Modification Of Warrants Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_ModificationOfWarrantsShares" xml:lang="en-US"> Modification of warrants, Shares subject to warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_ModificationOfWarrantsShares" xml:lang="en-US"> Modification of warrants. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_ModificationOfWarrantsShares" xlink:to="lab_572HMJ97544H_atnm_ModificationOfWarrantsShares"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ChangeInFairValueWarrantsShares" xlink:label="loc_929216F4IJ579I98G136_atnm_ChangeInFairValueWarrantsShares"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_ChangeInFairValueWarrantsShares" xml:lang="en-US"> Change In Fair Value Warrants Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_ChangeInFairValueWarrantsShares" xml:lang="en-US"> Change in fair value, Shares subject to warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_ChangeInFairValueWarrantsShares" xml:lang="en-US"> Change in fair value warrants shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_ChangeInFairValueWarrantsShares" xlink:to="lab_141438H6KL791K10I358_atnm_ChangeInFairValueWarrantsShares"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeNet" xlink:label="loc_350FKH75322F_us-gaap_DerivativeFairValueOfDerivativeNet"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeFairValueOfDerivativeNet" xml:lang="en-US"> Derivative, Fair Value, Net </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeFairValueOfDerivativeNet" xml:lang="en-US"> Derivative, Fair Value, Net </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeFairValueOfDerivativeNet" xml:lang="en-US"> Beginning balance, Fair Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeFairValueOfDerivativeNet" xml:lang="en-US"> Ending Balance, Fair Value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_DerivativeFairValueOfDerivativeNet" xlink:to="lab_572HMJ97544H_us-gaap_DerivativeFairValueOfDerivativeNet"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ModificationOfWarrants" xlink:label="loc_929216F4IJ579I98G136_atnm_ModificationOfWarrants"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_ModificationOfWarrants" xml:lang="en-US"> Modification Of Warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_ModificationOfWarrants" xml:lang="en-US"> Modification of warrants, Fair Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_ModificationOfWarrants" xml:lang="en-US"> Incremental value of the derivative warrant </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_ModificationOfWarrants" xml:lang="en-US"> Modification of warrants. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_ModificationOfWarrants" xlink:to="lab_141438H6KL791K10I358_atnm_ModificationOfWarrants"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ChangeInFairValueOfDerivativeWarrants" xlink:label="loc_350FKH75322F_atnm_ChangeInFairValueOfDerivativeWarrants"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_ChangeInFairValueOfDerivativeWarrants" xml:lang="en-US"> Change In Fair Value Of Derivative Warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_ChangeInFairValueOfDerivativeWarrants" xml:lang="en-US"> Change in fair value, Fair Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_ChangeInFairValueOfDerivativeWarrants" xml:lang="en-US"> Change in fair value of derivative warrants. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_ChangeInFairValueOfDerivativeWarrants" xlink:to="lab_572HMJ97544H_atnm_ChangeInFairValueOfDerivativeWarrants"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_929216F4IJ579I98G136_us-gaap_StatementTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_StatementTable" xml:lang="en-US"> Statement [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_StatementTable" xlink:to="lab_141438H6KL791K10I358_us-gaap_StatementTable"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_350FKH75322F_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xml:lang="en-US"> Defined Benefit Plan, Asset Categories [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:to="lab_572HMJ97544H_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_929216F4IJ579I98G136_us-gaap_PlanAssetCategoriesDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_PlanAssetCategoriesDomain" xml:lang="en-US"> Plan Asset Categories [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_PlanAssetCategoriesDomain" xlink:to="lab_141438H6KL791K10I358_us-gaap_PlanAssetCategoriesDomain"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeMember" xlink:label="loc_350FKH75322F_us-gaap_DerivativeMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeMember" xml:lang="en-US"> Derivative [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeMember" xml:lang="en-US"> Derivative warrants [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_DerivativeMember" xlink:to="lab_572HMJ97544H_us-gaap_DerivativeMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_929216F4IJ579I98G136_us-gaap_RangeAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_RangeAxis" xml:lang="en-US"> Range [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_RangeAxis" xml:lang="en-US"> Range [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_RangeAxis" xlink:to="lab_141438H6KL791K10I358_us-gaap_RangeAxis"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_350FKH75322F_us-gaap_RangeMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_RangeMember" xml:lang="en-US"> Range [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_RangeMember" xml:lang="en-US"> Range [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_RangeMember" xlink:to="lab_572HMJ97544H_us-gaap_RangeMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_929216F4IJ579I98G136_us-gaap_MinimumMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_MinimumMember" xml:lang="en-US"> Minimum [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_MinimumMember" xml:lang="en-US"> Minimum [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_MinimumMember" xlink:to="lab_141438H6KL791K10I358_us-gaap_MinimumMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_350FKH75322F_us-gaap_MaximumMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_MaximumMember" xml:lang="en-US"> Maximum [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_MaximumMember" xml:lang="en-US"> Maximum [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_MaximumMember" xlink:to="lab_572HMJ97544H_us-gaap_MaximumMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_929216F4IJ579I98G136_us-gaap_StatementLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_StatementLineItems" xml:lang="en-US"> Statement [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_StatementLineItems" xlink:to="lab_141438H6KL791K10I358_us-gaap_StatementLineItems"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_SummaryOfFairValueOfDerivativeWarrantsOnBasisOfValuationModelAbstract" xlink:label="loc_350FKH75322F_atnm_SummaryOfFairValueOfDerivativeWarrantsOnBasisOfValuationModelAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_SummaryOfFairValueOfDerivativeWarrantsOnBasisOfValuationModelAbstract" xml:lang="en-US"> Summary Of Fair Value Of Derivative Warrants On Basis Of Valuation Model [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_SummaryOfFairValueOfDerivativeWarrantsOnBasisOfValuationModelAbstract" xml:lang="en-US"> Summary of fair values of derivative warrants on basis of valuation model </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_SummaryOfFairValueOfDerivativeWarrantsOnBasisOfValuationModelAbstract" xlink:to="lab_572HMJ97544H_atnm_SummaryOfFairValueOfDerivativeWarrantsOnBasisOfValuationModelAbstract"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_MarketValueOfCommonStockOnMeasurementDate" xlink:label="loc_929216F4IJ579I98G136_atnm_MarketValueOfCommonStockOnMeasurementDate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_MarketValueOfCommonStockOnMeasurementDate" xml:lang="en-US"> Market Value Of Common Stock On Measurement Date </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_MarketValueOfCommonStockOnMeasurementDate" xml:lang="en-US"> Market value of common stock on measurement date </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_MarketValueOfCommonStockOnMeasurementDate" xml:lang="en-US"> Market value of common stock on measurement date. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_MarketValueOfCommonStockOnMeasurementDate" xlink:to="lab_141438H6KL791K10I358_atnm_MarketValueOfCommonStockOnMeasurementDate"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssumptionsExercisePrice" xlink:label="loc_350FKH75322F_us-gaap_FairValueAssumptionsExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExercisePrice" xml:lang="en-US"> Fair Value Assumptions, Exercise Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExercisePrice" xml:lang="en-US"> Adjusted exercise price </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_FairValueAssumptionsExercisePrice" xlink:to="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExercisePrice"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssumptionsRiskFreeInterestRate" xlink:label="loc_929216F4IJ579I98G136_us-gaap_FairValueAssumptionsRiskFreeInterestRate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueAssumptionsRiskFreeInterestRate" xml:lang="en-US"> Fair Value Assumptions, Risk Free Interest Rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueAssumptionsRiskFreeInterestRate" xml:lang="en-US"> Risk free interest rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueAssumptionsRiskFreeInterestRate" xml:lang="en-US"> Risk free interest rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueAssumptionsRiskFreeInterestRate" xml:lang="en-US"> Fair value assumptions, expected risk free interest rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_FairValueAssumptionsRiskFreeInterestRate" xlink:to="lab_141438H6KL791K10I358_us-gaap_FairValueAssumptionsRiskFreeInterestRate"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssumptionsExpectedTerm" xlink:label="loc_350FKH75322F_us-gaap_FairValueAssumptionsExpectedTerm"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExpectedTerm" xml:lang="en-US"> Fair Value Assumptions, Expected Term </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExpectedTerm" xml:lang="en-US"> Term of options </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExpectedTerm" xml:lang="en-US"> Warrant lives in years </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance" xlink:label="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExpectedTerm" xml:lang="en-US"> Contractual life </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/disclosureGuidance" xlink:label="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExpectedTerm" xml:lang="en-US"> Fair value assumptions, expected term </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/presentationGuidance" xlink:label="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExpectedTerm" xml:lang="en-US"> Fair value assumptions, expected life </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_FairValueAssumptionsExpectedTerm" xlink:to="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExpectedTerm"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssumptionsExpectedVolatilityRate" xlink:label="loc_929216F4IJ579I98G136_us-gaap_FairValueAssumptionsExpectedVolatilityRate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueAssumptionsExpectedVolatilityRate" xml:lang="en-US"> Fair Value Assumptions, Expected Volatility Rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueAssumptionsExpectedVolatilityRate" xml:lang="en-US"> Expected volatility </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueAssumptionsExpectedVolatilityRate" xml:lang="en-US"> Expected volatility </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueAssumptionsExpectedVolatilityRate" xml:lang="en-US"> Fair value assumptions, expected volatility rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_FairValueAssumptionsExpectedVolatilityRate" xlink:to="lab_141438H6KL791K10I358_us-gaap_FairValueAssumptionsExpectedVolatilityRate"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssumptionsExpectedDividendRate" xlink:label="loc_350FKH75322F_us-gaap_FairValueAssumptionsExpectedDividendRate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExpectedDividendRate" xml:lang="en-US"> Fair Value Assumptions, Expected Dividend Rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExpectedDividendRate" xml:lang="en-US"> Expected dividend yield </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExpectedDividendRate" xml:lang="en-US"> Expected dividend yield </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance" xlink:label="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExpectedDividendRate" xml:lang="en-US"> Fair value assumptions, expected dividend rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_FairValueAssumptionsExpectedDividendRate" xlink:to="lab_572HMJ97544H_us-gaap_FairValueAssumptionsExpectedDividendRate"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsProbabilityOfDefault" xlink:label="loc_929216F4IJ579I98G136_us-gaap_FairValueInputsProbabilityOfDefault"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueInputsProbabilityOfDefault" xml:lang="en-US"> Fair Value Inputs, Probability Of Default </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_FairValueInputsProbabilityOfDefault" xml:lang="en-US"> Probability of stock offering in any period over 5 years </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_FairValueInputsProbabilityOfDefault" xlink:to="lab_141438H6KL791K10I358_us-gaap_FairValueInputsProbabilityOfDefault"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_FairValueAssumptionOfferingPrice" xlink:label="loc_350FKH75322F_atnm_FairValueAssumptionOfferingPrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_FairValueAssumptionOfferingPrice" xml:lang="en-US"> Fair Value Assumption Offering Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_FairValueAssumptionOfferingPrice" xml:lang="en-US"> Offering price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_FairValueAssumptionOfferingPrice" xml:lang="en-US"> Fair value assumption offering price. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_FairValueAssumptionOfferingPrice" xlink:to="lab_572HMJ97544H_atnm_FairValueAssumptionOfferingPrice"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="loc_929216F4IJ579I98G136_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xml:lang="en-US"> Derivative Instruments, Gain (Loss) By Hedging Relationship, By Income Statement Location, By Derivative Instrument Risk [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xml:lang="en-US"> Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:to="lab_141438H6KL791K10I358_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="loc_350FKH75322F_us-gaap_DerivativeInstrumentsGainLossLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeInstrumentsGainLossLineItems" xml:lang="en-US"> Derivative Instruments, Gain (Loss) [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_DerivativeInstrumentsGainLossLineItems" xml:lang="en-US"> Derivative Instruments, Gain (Loss) [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:to="lab_572HMJ97544H_us-gaap_DerivativeInstrumentsGainLossLineItems"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_DerivativeTextualAbstract" xlink:label="loc_929216F4IJ579I98G136_atnm_DerivativeTextualAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_DerivativeTextualAbstract" xml:lang="en-US"> Derivative Textual [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_DerivativeTextualAbstract" xml:lang="en-US"> Derivatives (Textual) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_DerivativeTextualAbstract" xlink:to="lab_141438H6KL791K10I358_atnm_DerivativeTextualAbstract"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_NumberOfSharesWarrantExercise" xlink:label="loc_350FKH75322F_atnm_NumberOfSharesWarrantExercise"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_NumberOfSharesWarrantExercise" xml:lang="en-US"> Number Of Shares Warrant Exercise </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_NumberOfSharesWarrantExercise" xml:lang="en-US"> Number of warrants exercised </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_NumberOfSharesWarrantExercise" xml:lang="en-US"> Number of shares warrant exercise. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_NumberOfSharesWarrantExercise" xlink:to="lab_572HMJ97544H_atnm_NumberOfSharesWarrantExercise"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ProbabilityOfStockOfferingPeriod" xlink:label="loc_929216F4IJ579I98G136_atnm_ProbabilityOfStockOfferingPeriod"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_ProbabilityOfStockOfferingPeriod" xml:lang="en-US"> Probability Of Stock Offering Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_ProbabilityOfStockOfferingPeriod" xml:lang="en-US"> Probability of stock offering period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_ProbabilityOfStockOfferingPeriod" xml:lang="en-US"> Probability of stock offering period . </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_ProbabilityOfStockOfferingPeriod" xlink:to="lab_141438H6KL791K10I358_atnm_ProbabilityOfStockOfferingPeriod"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_WarrantToPurchaseOfCommonStock" xlink:label="loc_350FKH75322F_atnm_WarrantToPurchaseOfCommonStock"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_WarrantToPurchaseOfCommonStock" xml:lang="en-US"> Warrant To Purchase Of Common Stock </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_WarrantToPurchaseOfCommonStock" xml:lang="en-US"> Warrant to purchase of common stock </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_WarrantToPurchaseOfCommonStock" xml:lang="en-US"> Warrant to purchase of common stock. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_WarrantToPurchaseOfCommonStock" xlink:to="lab_572HMJ97544H_atnm_WarrantToPurchaseOfCommonStock"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermPurchaseCommitmentTable" xlink:label="loc_929216F4IJ579I98G136_us-gaap_LongTermPurchaseCommitmentTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_LongTermPurchaseCommitmentTable" xml:lang="en-US"> Long-Term Purchase Commitment [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_LongTermPurchaseCommitmentTable" xml:lang="en-US"> Long-term Purchase Commitment [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_LongTermPurchaseCommitmentTable" xlink:to="lab_141438H6KL791K10I358_us-gaap_LongTermPurchaseCommitmentTable"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_AbbviewBiotherapeuticsCorpMember" xlink:label="loc_350FKH75322F_atnm_AbbviewBiotherapeuticsCorpMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_AbbviewBiotherapeuticsCorpMember" xml:lang="en-US"> Abbview Biotherapeutics Corp [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_AbbviewBiotherapeuticsCorpMember" xml:lang="en-US"> AbbVie Biotherapeutics Corp [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_AbbviewBiotherapeuticsCorpMember" xml:lang="en-US"> AbbView biotherapeutics corp. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_AbbviewBiotherapeuticsCorpMember" xlink:to="lab_572HMJ97544H_atnm_AbbviewBiotherapeuticsCorpMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_PhaseFirstClinicalTrialOfLicensedProductMember" xlink:label="loc_929216F4IJ579I98G136_atnm_PhaseFirstClinicalTrialOfLicensedProductMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_PhaseFirstClinicalTrialOfLicensedProductMember" xml:lang="en-US"> Phase First Clinical Trial Of Licensed Product [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_PhaseFirstClinicalTrialOfLicensedProductMember" xml:lang="en-US"> Phase 1 Clinical Trial of a licensed product [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_PhaseFirstClinicalTrialOfLicensedProductMember" xml:lang="en-US"> Phase first clinical trial of a licensed product. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_PhaseFirstClinicalTrialOfLicensedProductMember" xlink:to="lab_141438H6KL791K10I358_atnm_PhaseFirstClinicalTrialOfLicensedProductMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_PhaseSecondClinicalTrialOfLicensedProductMember" xlink:label="loc_350FKH75322F_atnm_PhaseSecondClinicalTrialOfLicensedProductMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_PhaseSecondClinicalTrialOfLicensedProductMember" xml:lang="en-US"> Phase Second Clinical Trial Of Licensed Product [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_PhaseSecondClinicalTrialOfLicensedProductMember" xml:lang="en-US"> Phase 2 Clinical Trial of a licensed product [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_PhaseSecondClinicalTrialOfLicensedProductMember" xml:lang="en-US"> Phase second clinical trial of licensed product. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_PhaseSecondClinicalTrialOfLicensedProductMember" xlink:to="lab_572HMJ97544H_atnm_PhaseSecondClinicalTrialOfLicensedProductMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_PhaseThirdClinicalTrialOfLicensedProductMember" xlink:label="loc_929216F4IJ579I98G136_atnm_PhaseThirdClinicalTrialOfLicensedProductMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_PhaseThirdClinicalTrialOfLicensedProductMember" xml:lang="en-US"> Phase Third Clinical Trial Of Licensed Product [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_PhaseThirdClinicalTrialOfLicensedProductMember" xml:lang="en-US"> Phase 3 Clinical Trial of a licensed product [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_PhaseThirdClinicalTrialOfLicensedProductMember" xml:lang="en-US"> Phase III clinical trial of licensed product. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_PhaseThirdClinicalTrialOfLicensedProductMember" xlink:to="lab_141438H6KL791K10I358_atnm_PhaseThirdClinicalTrialOfLicensedProductMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_BiologicalLicenseApplicationMember" xlink:label="loc_350FKH75322F_atnm_BiologicalLicenseApplicationMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_BiologicalLicenseApplicationMember" xml:lang="en-US"> Biological License Application [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_BiologicalLicenseApplicationMember" xml:lang="en-US"> Biological License Application filing with U.S. FDA [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_BiologicalLicenseApplicationMember" xml:lang="en-US"> Biological license application. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_BiologicalLicenseApplicationMember" xlink:to="lab_572HMJ97544H_atnm_BiologicalLicenseApplicationMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_FirstCommercialSaleMember" xlink:label="loc_929216F4IJ579I98G136_atnm_FirstCommercialSaleMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_FirstCommercialSaleMember" xml:lang="en-US"> First Commercial Sale [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_FirstCommercialSaleMember" xml:lang="en-US"> First commercial sale [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_FirstCommercialSaleMember" xml:lang="en-US"> First commercial sale. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_FirstCommercialSaleMember" xlink:to="lab_141438H6KL791K10I358_atnm_FirstCommercialSaleMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_AfterFirstNetSalesMember" xlink:label="loc_350FKH75322F_atnm_AfterFirstNetSalesMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_AfterFirstNetSalesMember" xml:lang="en-US"> After First Net Sales [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_AfterFirstNetSalesMember" xml:lang="en-US"> After first net sales [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_AfterFirstNetSalesMember" xml:lang="en-US"> After first net sales. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_AfterFirstNetSalesMember" xlink:to="lab_572HMJ97544H_atnm_AfterFirstNetSalesMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermPurchaseCommitmentLineItems" xlink:label="loc_929216F4IJ579I98G136_us-gaap_LongTermPurchaseCommitmentLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_LongTermPurchaseCommitmentLineItems" xml:lang="en-US"> Long-Term Purchase Commitment [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_LongTermPurchaseCommitmentLineItems" xml:lang="en-US"> Long-term Purchase Commitment [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_LongTermPurchaseCommitmentLineItems" xlink:to="lab_141438H6KL791K10I358_us-gaap_LongTermPurchaseCommitmentLineItems"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_MilestonePaymentAbstract" xlink:label="loc_350FKH75322F_atnm_MilestonePaymentAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_MilestonePaymentAbstract" xml:lang="en-US"> Milestone Payment [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_MilestonePaymentAbstract" xml:lang="en-US"> Summary of milestone payment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_MilestonePaymentAbstract" xlink:to="lab_572HMJ97544H_atnm_MilestonePaymentAbstract"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_LongTermPurchaseCommitmentMilestonesPayment" xlink:label="loc_929216F4IJ579I98G136_atnm_LongTermPurchaseCommitmentMilestonesPayment"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_LongTermPurchaseCommitmentMilestonesPayment" xml:lang="en-US"> Long Term Purchase Commitment Milestones Payment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_LongTermPurchaseCommitmentMilestonesPayment" xml:lang="en-US"> Milestones Payments </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_LongTermPurchaseCommitmentMilestonesPayment" xml:lang="en-US"> Long term purchase commitment milestones payment. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_LongTermPurchaseCommitmentMilestonesPayment" xlink:to="lab_141438H6KL791K10I358_atnm_LongTermPurchaseCommitmentMilestonesPayment"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermPurchaseCommitmentMilestones" xlink:label="loc_350FKH75322F_us-gaap_LongTermPurchaseCommitmentMilestones"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_LongTermPurchaseCommitmentMilestones" xml:lang="en-US"> Long-term Purchase Commitment, Milestones </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_LongTermPurchaseCommitmentMilestones" xml:lang="en-US"> Milestones Date Met </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_LongTermPurchaseCommitmentMilestones" xlink:to="lab_572HMJ97544H_us-gaap_LongTermPurchaseCommitmentMilestones"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:label="loc_929216F4IJ579I98G136_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract" xml:lang="en-US"> Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract" xml:lang="en-US"> Future minimum obligations on the lease are: </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract" xml:lang="en-US"> Operating leases future minimum payments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:to="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="loc_350FKH75322F_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xml:lang="en-US"> Operating Leases, Future Minimum Payments Due, Next Twelve Months </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xml:lang="en-US"> 2018 </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:to="lab_572HMJ97544H_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_929216F4IJ579I98G136_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due in Two Years </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xml:lang="en-US"> 2019 </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:to="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_350FKH75322F_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due in Three Years </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xml:lang="en-US"> 2020 </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:to="lab_572HMJ97544H_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_929216F4IJ579I98G136_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due in Four Years </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xml:lang="en-US"> 2021 </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:to="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="loc_350FKH75322F_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due Thereafter </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xml:lang="en-US"> Thereafter </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:to="lab_572HMJ97544H_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="loc_929216F4IJ579I98G136_us-gaap_OperatingLeasesFutureMinimumPaymentsDue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xml:lang="en-US"> Operating Leases, Future Minimum Payments Due </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xml:lang="en-US"> Total </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="lab_141438H6KL791K10I358_us-gaap_OperatingLeasesFutureMinimumPaymentsDue"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_CommitmentsAndContingenciesTable" xlink:label="loc_350FKH75322F_atnm_CommitmentsAndContingenciesTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_CommitmentsAndContingenciesTable" xml:lang="en-US"> Commitments and Contingencies [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_CommitmentsAndContingenciesTable" xml:lang="en-US"> Commitments and Contingencies [Table] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_CommitmentsAndContingenciesTable" xml:lang="en-US"> Commitments and contingencies. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_CommitmentsAndContingenciesTable" xlink:to="lab_572HMJ97544H_atnm_CommitmentsAndContingenciesTable"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_AbbottBioTherapeuticsCorpMember" xlink:label="loc_929216F4IJ579I98G136_atnm_AbbottBioTherapeuticsCorpMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_AbbottBioTherapeuticsCorpMember" xml:lang="en-US"> Abbott Bio Therapeutics Corp [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_AbbottBioTherapeuticsCorpMember" xml:lang="en-US"> Abbott Biotherapeutics Corp [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_AbbottBioTherapeuticsCorpMember" xml:lang="en-US"> Abbott bio therapeutics corp. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_AbbottBioTherapeuticsCorpMember" xlink:to="lab_141438H6KL791K10I358_atnm_AbbottBioTherapeuticsCorpMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_OakRidgeNationalLaboratoryMember" xlink:label="loc_350FKH75322F_atnm_OakRidgeNationalLaboratoryMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_OakRidgeNationalLaboratoryMember" xml:lang="en-US"> Oak Ridge National Laboratory [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_OakRidgeNationalLaboratoryMember" xml:lang="en-US"> Oak Ridge National Laboratory [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_OakRidgeNationalLaboratoryMember" xml:lang="en-US"> Oak ridge national laboratory. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_OakRidgeNationalLaboratoryMember" xlink:to="lab_572HMJ97544H_atnm_OakRidgeNationalLaboratoryMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_IconClinicalResearchMember" xlink:label="loc_929216F4IJ579I98G136_atnm_IconClinicalResearchMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_IconClinicalResearchMember" xml:lang="en-US"> Icon Clinical Research [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_IconClinicalResearchMember" xml:lang="en-US"> Icon Clinical Research [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_IconClinicalResearchMember" xml:lang="en-US"> AIcon clinical research. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_IconClinicalResearchMember" xlink:to="lab_141438H6KL791K10I358_atnm_IconClinicalResearchMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_FredHutchinsonCancerResearchCenterMember" xlink:label="loc_350FKH75322F_atnm_FredHutchinsonCancerResearchCenterMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_FredHutchinsonCancerResearchCenterMember" xml:lang="en-US"> Fred Hutchinson Cancer Research Center [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_FredHutchinsonCancerResearchCenterMember" xml:lang="en-US"> Fred Hutchinson Cancer Research Center [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_FredHutchinsonCancerResearchCenterMember" xml:lang="en-US"> Fred hutchinson cancer research center. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_FredHutchinsonCancerResearchCenterMember" xlink:to="lab_572HMJ97544H_atnm_FredHutchinsonCancerResearchCenterMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_UniversityOfTexasMDAndersonCancerCenterMember" xlink:label="loc_929216F4IJ579I98G136_atnm_UniversityOfTexasMDAndersonCancerCenterMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_UniversityOfTexasMDAndersonCancerCenterMember" xml:lang="en-US"> University Of Texas M D Anderson Cancer Center [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_UniversityOfTexasMDAndersonCancerCenterMember" xml:lang="en-US"> University of Texas M.D. Anderson Cancer Center [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_UniversityOfTexasMDAndersonCancerCenterMember" xml:lang="en-US"> University of texas M.D. anderson cancer center. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_UniversityOfTexasMDAndersonCancerCenterMember" xlink:to="lab_141438H6KL791K10I358_atnm_UniversityOfTexasMDAndersonCancerCenterMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_JohnsHopkinsUniversityMember" xlink:label="loc_350FKH75322F_atnm_JohnsHopkinsUniversityMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_JohnsHopkinsUniversityMember" xml:lang="en-US"> Johns Hopkins University [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_JohnsHopkinsUniversityMember" xml:lang="en-US"> Johns Hopkins University [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_JohnsHopkinsUniversityMember" xml:lang="en-US"> Johns hopkins university. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_JohnsHopkinsUniversityMember" xlink:to="lab_572HMJ97544H_atnm_JohnsHopkinsUniversityMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_LaidlawAndCoMember" xlink:label="loc_929216F4IJ579I98G136_atnm_LaidlawAndCoMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_LaidlawAndCoMember" xml:lang="en-US"> Laidlaw and Co [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_LaidlawAndCoMember" xml:lang="en-US"> Laidlaw & Co [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_LaidlawAndCoMember" xml:lang="en-US"> Laidlaw and company. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_LaidlawAndCoMember" xlink:to="lab_141438H6KL791K10I358_atnm_LaidlawAndCoMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_UniversityOfPennsylvaniaMember" xlink:label="loc_350FKH75322F_atnm_UniversityOfPennsylvaniaMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_UniversityOfPennsylvaniaMember" xml:lang="en-US"> University Of Pennsylvania [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_UniversityOfPennsylvaniaMember" xml:lang="en-US"> University of Pennsylvania [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_UniversityOfPennsylvaniaMember" xml:lang="en-US"> University of pennsylvania. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_UniversityOfPennsylvaniaMember" xlink:to="lab_572HMJ97544H_atnm_UniversityOfPennsylvaniaMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_MedpaceIncMember" xlink:label="loc_929216F4IJ579I98G136_atnm_MedpaceIncMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_MedpaceIncMember" xml:lang="en-US"> Medpace Inc [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_MedpaceIncMember" xml:lang="en-US"> Medpace, Inc. [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_MedpaceIncMember" xlink:to="lab_141438H6KL791K10I358_atnm_MedpaceIncMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_AgreementAxis" xlink:label="loc_350FKH75322F_atnm_AgreementAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_AgreementAxis" xml:lang="en-US"> Agreement [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_AgreementAxis" xml:lang="en-US"> Agreement [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_AgreementAxis" xml:lang="en-US"> Agreement. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_AgreementAxis" xlink:to="lab_572HMJ97544H_atnm_AgreementAxis"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_AgreementDomain" xlink:label="loc_929216F4IJ579I98G136_atnm_AgreementDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_AgreementDomain" xml:lang="en-US"> Agreement [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_AgreementDomain" xml:lang="en-US"> Agreement [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_AgreementDomain" xml:lang="en-US"> Agreement. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_AgreementDomain" xlink:to="lab_141438H6KL791K10I358_atnm_AgreementDomain"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ProductDevelopmentAndPatentLicenseAgreementMember" xlink:label="loc_350FKH75322F_atnm_ProductDevelopmentAndPatentLicenseAgreementMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_ProductDevelopmentAndPatentLicenseAgreementMember" xml:lang="en-US"> Product Development and Patent License Agreement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_ProductDevelopmentAndPatentLicenseAgreementMember" xml:lang="en-US"> Product Development and Patent License Agreement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_ProductDevelopmentAndPatentLicenseAgreementMember" xml:lang="en-US"> Product development and patent license agreement. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_ProductDevelopmentAndPatentLicenseAgreementMember" xlink:to="lab_572HMJ97544H_atnm_ProductDevelopmentAndPatentLicenseAgreementMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_LicenseAndSponsoredResearchAgreementMember" xlink:label="loc_929216F4IJ579I98G136_atnm_LicenseAndSponsoredResearchAgreementMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_LicenseAndSponsoredResearchAgreementMember" xml:lang="en-US"> License and Sponsored Research Agreement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_LicenseAndSponsoredResearchAgreementMember" xml:lang="en-US"> License and sponsored research agreement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_LicenseAndSponsoredResearchAgreementMember" xml:lang="en-US"> License and sponsored research agreement. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_LicenseAndSponsoredResearchAgreementMember" xlink:to="lab_141438H6KL791K10I358_atnm_LicenseAndSponsoredResearchAgreementMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ClinicalTrialAgreementMember" xlink:label="loc_350FKH75322F_atnm_ClinicalTrialAgreementMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_ClinicalTrialAgreementMember" xml:lang="en-US"> Clinical Trial Agreement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_ClinicalTrialAgreementMember" xml:lang="en-US"> Clinical Trial Agreement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_ClinicalTrialAgreementMember" xml:lang="en-US"> Clinical trial agreement. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_ClinicalTrialAgreementMember" xlink:to="lab_572HMJ97544H_atnm_ClinicalTrialAgreementMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ManufacturingAgreementMember" xlink:label="loc_929216F4IJ579I98G136_atnm_ManufacturingAgreementMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_ManufacturingAgreementMember" xml:lang="en-US"> Manufacturing Agreement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_ManufacturingAgreementMember" xml:lang="en-US"> Manufacturing Agreement [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_ManufacturingAgreementMember" xlink:to="lab_141438H6KL791K10I358_atnm_ManufacturingAgreementMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_AlbertEinsteinMember" xlink:label="loc_350FKH75322F_atnm_AlbertEinsteinMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_AlbertEinsteinMember" xml:lang="en-US"> Albert Einstein [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_AlbertEinsteinMember" xml:lang="en-US"> Einstein [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_AlbertEinsteinMember" xlink:to="lab_572HMJ97544H_atnm_AlbertEinsteinMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_CROAgreementMember" xlink:label="loc_929216F4IJ579I98G136_atnm_CROAgreementMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_CROAgreementMember" xml:lang="en-US"> C R O Agreement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_CROAgreementMember" xml:lang="en-US"> CRO Agreement [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_CROAgreementMember" xml:lang="en-US"> Cro agreement. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_CROAgreementMember" xlink:to="lab_141438H6KL791K10I358_atnm_CROAgreementMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_350FKH75322F_us-gaap_ShortTermDebtTypeAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ShortTermDebtTypeAxis" xml:lang="en-US"> Short-term Debt, Type [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ShortTermDebtTypeAxis" xlink:to="lab_572HMJ97544H_us-gaap_ShortTermDebtTypeAxis"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ShortTermDebtTypeDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShortTermDebtTypeDomain" xml:lang="en-US"> Short-term Debt, Type [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ShortTermDebtTypeDomain" xlink:to="lab_141438H6KL791K10I358_us-gaap_ShortTermDebtTypeDomain"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LetterOfCreditMember" xlink:label="loc_350FKH75322F_us-gaap_LetterOfCreditMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_LetterOfCreditMember" xml:lang="en-US"> Letter of Credit [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_LetterOfCreditMember" xlink:to="lab_572HMJ97544H_us-gaap_LetterOfCreditMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_CommitmentsAndContingenciesLineItems" xlink:label="loc_929216F4IJ579I98G136_atnm_CommitmentsAndContingenciesLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_CommitmentsAndContingenciesLineItems" xml:lang="en-US"> Commitments and Contingencies [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_CommitmentsAndContingenciesLineItems" xml:lang="en-US"> Commitments and Contingencies [Line Items] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_CommitmentsAndContingenciesLineItems" xml:lang="en-US"> Commitments and contingencies. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_CommitmentsAndContingenciesLineItems" xlink:to="lab_141438H6KL791K10I358_atnm_CommitmentsAndContingenciesLineItems"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_CommitmentsAndContingenciesTextualAbstract" xlink:label="loc_350FKH75322F_atnm_CommitmentsAndContingenciesTextualAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_CommitmentsAndContingenciesTextualAbstract" xml:lang="en-US"> Commitments and Contingencies (Textual) [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_CommitmentsAndContingenciesTextualAbstract" xml:lang="en-US"> Commitments and Contingencies (Textual) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_CommitmentsAndContingenciesTextualAbstract" xlink:to="lab_572HMJ97544H_atnm_CommitmentsAndContingenciesTextualAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RevenueRecognitionMilestoneMethodRevenueRecognized" xlink:label="loc_929216F4IJ579I98G136_us-gaap_RevenueRecognitionMilestoneMethodRevenueRecognized"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_RevenueRecognitionMilestoneMethodRevenueRecognized" xml:lang="en-US"> Revenue Recognition, Milestone Method, Revenue Recognized </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_RevenueRecognitionMilestoneMethodRevenueRecognized" xml:lang="en-US"> Net sales in milestones payment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_RevenueRecognitionMilestoneMethodRevenueRecognized" xlink:to="lab_141438H6KL791K10I358_us-gaap_RevenueRecognitionMilestoneMethodRevenueRecognized"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LicenseCosts" xlink:label="loc_350FKH75322F_us-gaap_LicenseCosts"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_LicenseCosts" xml:lang="en-US"> License Costs </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_LicenseCosts" xml:lang="en-US"> License fee payment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_LicenseCosts" xlink:to="lab_572HMJ97544H_us-gaap_LicenseCosts"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_DescriptionOfRoyaltyPaymentToRelatedParty" xlink:label="loc_929216F4IJ579I98G136_atnm_DescriptionOfRoyaltyPaymentToRelatedParty"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_DescriptionOfRoyaltyPaymentToRelatedParty" xml:lang="en-US"> Description Of Royalty Payment To Related Party </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_DescriptionOfRoyaltyPaymentToRelatedParty" xml:lang="en-US"> Description of royalty payment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_DescriptionOfRoyaltyPaymentToRelatedParty" xml:lang="en-US"> Description of royalty payment to related party. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_DescriptionOfRoyaltyPaymentToRelatedParty" xlink:to="lab_141438H6KL791K10I358_atnm_DescriptionOfRoyaltyPaymentToRelatedParty"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_RoyaltyOfNetSalesPercentage" xlink:label="loc_350FKH75322F_atnm_RoyaltyOfNetSalesPercentage"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_RoyaltyOfNetSalesPercentage" xml:lang="en-US"> Royalty Of Net Sales Percentage </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_RoyaltyOfNetSalesPercentage" xml:lang="en-US"> Royalty of net sales percentage </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_RoyaltyOfNetSalesPercentage" xml:lang="en-US"> Royalty of net sales percentage. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_RoyaltyOfNetSalesPercentage" xlink:to="lab_572HMJ97544H_atnm_RoyaltyOfNetSalesPercentage"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_FirstCommercialSalePeriod" xlink:label="loc_929216F4IJ579I98G136_atnm_FirstCommercialSalePeriod"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_FirstCommercialSalePeriod" xml:lang="en-US"> First Commercial Sale Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_FirstCommercialSalePeriod" xml:lang="en-US"> First commercial sale period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_FirstCommercialSalePeriod" xml:lang="en-US"> First commercial sale period. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_FirstCommercialSalePeriod" xlink:to="lab_141438H6KL791K10I358_atnm_FirstCommercialSalePeriod"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ProjectEstimatedCost" xlink:label="loc_350FKH75322F_atnm_ProjectEstimatedCost"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_ProjectEstimatedCost" xml:lang="en-US"> Project Estimated Cost </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_ProjectEstimatedCost" xml:lang="en-US"> Project estimated cost </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_ProjectEstimatedCost" xml:lang="en-US"> Project estimated cost. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_ProjectEstimatedCost" xlink:to="lab_572HMJ97544H_atnm_ProjectEstimatedCost"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_DownPaymentOfProjectEstimatedCostPercentage" xlink:label="loc_929216F4IJ579I98G136_atnm_DownPaymentOfProjectEstimatedCostPercentage"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_DownPaymentOfProjectEstimatedCostPercentage" xml:lang="en-US"> Down Payment Of Project Estimated Cost Percentage </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_DownPaymentOfProjectEstimatedCostPercentage" xml:lang="en-US"> Down payment of project estimated cost percentage </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_DownPaymentOfProjectEstimatedCostPercentage" xml:lang="en-US"> Percentage of total estimated project cost required for down payment. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_DownPaymentOfProjectEstimatedCostPercentage" xlink:to="lab_141438H6KL791K10I358_atnm_DownPaymentOfProjectEstimatedCostPercentage"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_DownPaymentForProject" xlink:label="loc_350FKH75322F_atnm_DownPaymentForProject"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_DownPaymentForProject" xml:lang="en-US"> Down Payment For Project </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_DownPaymentForProject" xml:lang="en-US"> Down payment for project </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_DownPaymentForProject" xml:lang="en-US"> Down payment for project. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_DownPaymentForProject" xlink:to="lab_572HMJ97544H_atnm_DownPaymentForProject"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_DownPayment" xlink:label="loc_929216F4IJ579I98G136_atnm_DownPayment"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_DownPayment" xml:lang="en-US"> Down Payment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_DownPayment" xml:lang="en-US"> Down payment paid in 2007 and 2012 </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_DownPayment" xml:lang="en-US"> The payment typically represents only a percentage of the full purchase price. A down payment is a type of payment made in cash during the onset of the purchase of an expensive good or service. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_DownPayment" xlink:to="lab_141438H6KL791K10I358_atnm_DownPayment"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ClinicalTrialCostForApprovalForFoodAndDrugAdministration" xlink:label="loc_350FKH75322F_atnm_ClinicalTrialCostForApprovalForFoodAndDrugAdministration"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_ClinicalTrialCostForApprovalForFoodAndDrugAdministration" xml:lang="en-US"> Clinical Trial Cost For Approval For Food and Drug Administration </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_ClinicalTrialCostForApprovalForFoodAndDrugAdministration" xml:lang="en-US"> Clinical trial cost for approval of food and drug administration </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_ClinicalTrialCostForApprovalForFoodAndDrugAdministration" xml:lang="en-US"> Clinical trial cost for approval of food and drug administration. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_ClinicalTrialCostForApprovalForFoodAndDrugAdministration" xlink:to="lab_572HMJ97544H_atnm_ClinicalTrialCostForApprovalForFoodAndDrugAdministration"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_FundToRelatedPartyUnderAgreementForFirstTwoYear" xlink:label="loc_929216F4IJ579I98G136_atnm_FundToRelatedPartyUnderAgreementForFirstTwoYear"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_FundToRelatedPartyUnderAgreementForFirstTwoYear" xml:lang="en-US"> Fund To Related Party Under Agreement For First Two Year </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_FundToRelatedPartyUnderAgreementForFirstTwoYear" xml:lang="en-US"> Fund for Fred Hutchinson Cancer Research Center lab ( Per year for the first two years ) </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_FundToRelatedPartyUnderAgreementForFirstTwoYear" xml:lang="en-US"> Fund to related party under agreement for first two Year. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_FundToRelatedPartyUnderAgreementForFirstTwoYear" xlink:to="lab_141438H6KL791K10I358_atnm_FundToRelatedPartyUnderAgreementForFirstTwoYear"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_FundToRelatedPartyUnderAgreementAfterYearTwo" xlink:label="loc_350FKH75322F_atnm_FundToRelatedPartyUnderAgreementAfterYearTwo"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_FundToRelatedPartyUnderAgreementAfterYearTwo" xml:lang="en-US"> Fund To Related Party Under Agreement After Year Two </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_FundToRelatedPartyUnderAgreementAfterYearTwo" xml:lang="en-US"> Fund for Fred Hutchinson Cancer Research Center lab ( thereafter ) </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_FundToRelatedPartyUnderAgreementAfterYearTwo" xml:lang="en-US"> Fund to related party under agreement after year two. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_FundToRelatedPartyUnderAgreementAfterYearTwo" xlink:to="lab_572HMJ97544H_atnm_FundToRelatedPartyUnderAgreementAfterYearTwo"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_NonRefundableInstitutionalFee" xlink:label="loc_929216F4IJ579I98G136_atnm_NonRefundableInstitutionalFee"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_NonRefundableInstitutionalFee" xml:lang="en-US"> Non Refundable Institutional Fee </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_NonRefundableInstitutionalFee" xml:lang="en-US"> Non - refundable institutional fee </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_NonRefundableInstitutionalFee" xml:lang="en-US"> Non refundable institutional fee. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_NonRefundableInstitutionalFee" xlink:to="lab_141438H6KL791K10I358_atnm_NonRefundableInstitutionalFee"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DevelopmentInProcess" xlink:label="loc_350FKH75322F_us-gaap_DevelopmentInProcess"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_DevelopmentInProcess" xml:lang="en-US"> Development in Process </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_DevelopmentInProcess" xml:lang="en-US"> Total project estimated to cost </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_DevelopmentInProcess" xlink:to="lab_572HMJ97544H_us-gaap_DevelopmentInProcess"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ResearchAndDevelopmentInProcess" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ResearchAndDevelopmentInProcess"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ResearchAndDevelopmentInProcess" xml:lang="en-US"> Research and Development in Process </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ResearchAndDevelopmentInProcess" xml:lang="en-US"> Research and development costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ResearchAndDevelopmentInProcess" xlink:to="lab_141438H6KL791K10I358_us-gaap_ResearchAndDevelopmentInProcess"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsForLeasingCosts" xlink:label="loc_350FKH75322F_us-gaap_PaymentsForLeasingCosts"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_PaymentsForLeasingCosts" xml:lang="en-US"> Payments for Leasing Costs </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_PaymentsForLeasingCosts" xml:lang="en-US"> Cost of lease agreement </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_PaymentsForLeasingCosts" xlink:to="lab_572HMJ97544H_us-gaap_PaymentsForLeasingCosts"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ServicesFees" xlink:label="loc_929216F4IJ579I98G136_atnm_ServicesFees"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_ServicesFees" xml:lang="en-US"> Services Fees </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_ServicesFees" xml:lang="en-US"> Services fees </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_ServicesFees" xml:lang="en-US"> Amount paid for services fees. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_ServicesFees" xlink:to="lab_141438H6KL791K10I358_atnm_ServicesFees"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_LeaseTerm" xlink:label="loc_350FKH75322F_atnm_LeaseTerm"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_LeaseTerm" xml:lang="en-US"> Lease Term </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_LeaseTerm" xml:lang="en-US"> Lease term </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_LeaseTerm" xml:lang="en-US"> Lease term. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_LeaseTerm" xlink:to="lab_572HMJ97544H_atnm_LeaseTerm"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_LeaseAgreementsDescription" xlink:label="loc_929216F4IJ579I98G136_atnm_LeaseAgreementsDescription"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_LeaseAgreementsDescription" xml:lang="en-US"> Lease Agreements Description </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_LeaseAgreementsDescription" xml:lang="en-US"> Lease agreements, Description </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_LeaseAgreementsDescription" xml:lang="en-US"> Lease agreements description. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_LeaseAgreementsDescription" xlink:to="lab_141438H6KL791K10I358_atnm_LeaseAgreementsDescription"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromLinesOfCredit" xlink:label="loc_350FKH75322F_us-gaap_ProceedsFromLinesOfCredit"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ProceedsFromLinesOfCredit" xml:lang="en-US"> Proceeds from Lines of Credit </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ProceedsFromLinesOfCredit" xml:lang="en-US"> Lines of credit </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ProceedsFromLinesOfCredit" xlink:to="lab_572HMJ97544H_us-gaap_ProceedsFromLinesOfCredit"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Deposits" xlink:label="loc_929216F4IJ579I98G136_us-gaap_Deposits"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_Deposits" xml:lang="en-US"> Deposits </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_Deposits" xml:lang="en-US"> Deposit </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_Deposits" xlink:to="lab_141438H6KL791K10I358_us-gaap_Deposits"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_350FKH75322F_us-gaap_AwardTypeAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_AwardTypeAxis" xml:lang="en-US"> Award Type [Axis] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_AwardTypeAxis" xml:lang="en-US"> Award Type [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_AwardTypeAxis" xlink:to="lab_572HMJ97544H_us-gaap_AwardTypeAxis"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xml:lang="en-US"> Equity Award [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xml:lang="en-US"> Award Type [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_350FKH75322F_us-gaap_EmployeeStockOptionMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_EmployeeStockOptionMember" xml:lang="en-US"> Employee Stock Option [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_EmployeeStockOptionMember" xml:lang="en-US"> Stock Option Plan [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_EmployeeStockOptionMember" xml:lang="en-US"> Stock Options [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance" xlink:label="lab_572HMJ97544H_us-gaap_EmployeeStockOptionMember" xml:lang="en-US"> Employee [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_EmployeeStockOptionMember" xlink:to="lab_572HMJ97544H_us-gaap_EmployeeStockOptionMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xml:lang="en-US"> Summary of warrants activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xml:lang="en-US"> Summary of stock option/ warrant activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xml:lang="en-US"> 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/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xml:lang="en-US"> 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/periodStartLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xml:lang="en-US"> Number of Units, Outstanding, Beginning balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xml:lang="en-US"> Number of Units, Outstanding, Ending balance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:to="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xml:lang="en-US"> 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/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xml:lang="en-US"> Number of stock option granted </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xml:lang="en-US"> Number of Units, Granted </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xml:lang="en-US"> Shares granted to employees and board of directors </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xml:lang="en-US"> Granted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:to="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_350FKH75322F_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xml:lang="en-US"> Issuance of common stock from exercise of options, Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xml:lang="en-US"> Exercised </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance" xlink:label="lab_572HMJ97544H_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xml:lang="en-US"> Number of stock exercised </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/disclosureGuidance" xlink:label="lab_572HMJ97544H_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xml:lang="en-US"> Warrants exercised by investor in a cashless exchange </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_572HMJ97544H_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xml:lang="en-US"> Number of Units, Exercised </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:to="lab_572HMJ97544H_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xml:lang="en-US"> Cancelled </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xml:lang="en-US"> Stock option forfeitures during period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/disclosureGuidance" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xml:lang="en-US"> Number of stock option cancelled </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xml:lang="en-US"> Number of Units, Cancelled </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:to="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xml:lang="en-US"> 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/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xml:lang="en-US"> Number of Units, Exercisable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:to="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xml:lang="en-US"> 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/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xml:lang="en-US"> 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/periodStartLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xml:lang="en-US"> Weighted Average Exercise Price, Outstanding, Beginning balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xml:lang="en-US"> Weighted Average Exercise Price, Outstanding, Ending balance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:to="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xml:lang="en-US"> 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="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xml:lang="en-US"> Restricted common stock and options, Exercise price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xml:lang="en-US"> Weighted Average Exercise Price, Granted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:to="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xml:lang="en-US"> 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="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xml:lang="en-US"> Weighted Average Exercise Price, Exercised </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xml:lang="en-US"> Stock option exercise prices </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:to="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:label="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xml:lang="en-US"> Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xml:lang="en-US"> Weighted Average Exercise Price, Cancelled </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:to="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xml:lang="en-US"> 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="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xml:lang="en-US"> Weighted Average Exercise Price, Exercisable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:to="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:label="loc_350FKH75322F_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xml:lang="en-US"> Stock option contractual term </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xml:lang="en-US"> Weighted Average Remaining Contractual Term (in years), Outstanding, Beginning balance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:to="lab_572HMJ97544H_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" xlink:label="loc_929216F4IJ579I98G136_atnm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" xml:lang="en-US"> Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Granted, Weighted Average Remaining Contractual Term </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" xml:lang="en-US"> Weighted Average Remaining Contractual Term (in years), Granted </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" xml:lang="en-US"> Weighted average remaining contractual term for vested portions of options outstanding and currently granted or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" xlink:to="lab_141438H6KL791K10I358_atnm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerms" xlink:label="loc_350FKH75322F_atnm_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerms"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerms" xml:lang="en-US"> Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Terms </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_atnm_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerms" xml:lang="en-US"> Weighted Average Remaining Contractual Term (in years), Outstanding, Ending balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerms" xml:lang="en-US"> Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerms" xlink:to="lab_572HMJ97544H_atnm_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerms"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="loc_929216F4IJ579I98G136_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xml:lang="en-US"> Weighted Average Remaining Contractual Term (in years), Exercisable </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xml:lang="en-US"> Share-based compensation term </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:to="lab_141438H6KL791K10I358_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xml:lang="en-US"> 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/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xml:lang="en-US"> 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/periodStartLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xml:lang="en-US"> Aggregate Intrinsic Value, Outstanding, Beginning balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xml:lang="en-US"> Aggregate Intrinsic Value, Outstanding, Ending balance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:to="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xml:lang="en-US"> Fair value of warrants determined utilizing the Black-Scholes option pricing model </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xml:lang="en-US"> Aggregate Intrinsic Value, Exercised </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:to="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue" xlink:label="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue" xml:lang="en-US"> Aggregate Intrinsic Value, Exercisable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue" xlink:to="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfStockByClassTable" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ScheduleOfStockByClassTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ScheduleOfStockByClassTable" xml:lang="en-US"> Schedule of Stock by Class [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ScheduleOfStockByClassTable" xlink:to="lab_141438H6KL791K10I358_us-gaap_ScheduleOfStockByClassTable"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AffiliatedEntityMember" xlink:label="loc_350FKH75322F_us-gaap_AffiliatedEntityMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_AffiliatedEntityMember" xml:lang="en-US"> Affiliated Entity [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_AffiliatedEntityMember" xml:lang="en-US"> Affiliated Entity [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_AffiliatedEntityMember" xlink:to="lab_572HMJ97544H_us-gaap_AffiliatedEntityMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TitleOfIndividualAxis" xlink:label="loc_929216F4IJ579I98G136_us-gaap_TitleOfIndividualAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_TitleOfIndividualAxis" xml:lang="en-US"> Title of Individual [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_TitleOfIndividualAxis" xlink:to="lab_141438H6KL791K10I358_us-gaap_TitleOfIndividualAxis"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="loc_350FKH75322F_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xml:lang="en-US"> Relationship to Entity [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:to="lab_572HMJ97544H_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ExecutiveChairmanMember" xlink:label="loc_929216F4IJ579I98G136_atnm_ExecutiveChairmanMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_ExecutiveChairmanMember" xml:lang="en-US"> Executive Chairman [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_ExecutiveChairmanMember" xml:lang="en-US"> Executive Chairman [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_ExecutiveChairmanMember" xlink:to="lab_141438H6KL791K10I358_atnm_ExecutiveChairmanMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_350FKH75322F_us-gaap_StatementClassOfStockAxis"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_StatementClassOfStockAxis" xml:lang="en-US"> Class of Stock [Axis] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_StatementClassOfStockAxis" xlink:to="lab_572HMJ97544H_us-gaap_StatementClassOfStockAxis"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ClassOfStockDomain"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ClassOfStockDomain" xml:lang="en-US"> Class of Stock [Domain] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ClassOfStockDomain" xlink:to="lab_141438H6KL791K10I358_us-gaap_ClassOfStockDomain"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_350FKH75322F_us-gaap_CommonStockMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_CommonStockMember" xml:lang="en-US"> Common Stock [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_CommonStockMember" xml:lang="en-US"> Common Stock [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_CommonStockMember" xlink:to="lab_572HMJ97544H_us-gaap_CommonStockMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="loc_929216F4IJ579I98G136_us-gaap_RestrictedStockMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_RestrictedStockMember" xml:lang="en-US"> Restricted Stock [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_RestrictedStockMember" xml:lang="en-US"> Restricted Stock [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_RestrictedStockMember" xlink:to="lab_141438H6KL791K10I358_us-gaap_RestrictedStockMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfStockLineItems" xlink:label="loc_350FKH75322F_us-gaap_ClassOfStockLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ClassOfStockLineItems" xml:lang="en-US"> Class of Stock [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ClassOfStockLineItems" xlink:to="lab_572HMJ97544H_us-gaap_ClassOfStockLineItems"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_EquityTextualsAbstract" xlink:label="loc_929216F4IJ579I98G136_atnm_EquityTextualsAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_EquityTextualsAbstract" xml:lang="en-US"> Equity Textuals [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_EquityTextualsAbstract" xml:lang="en-US"> Equity (Textual) </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_EquityTextualsAbstract" xml:lang="en-US"> Equity textual abstract. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_EquityTextualsAbstract" xlink:to="lab_141438H6KL791K10I358_atnm_EquityTextualsAbstract"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:label="loc_350FKH75322F_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xml:lang="en-US"> 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="lab_572HMJ97544H_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xml:lang="en-US"> Exercise price </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="lab_572HMJ97544H_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_929216F4IJ579I98G136_us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockIssuedDuringPeriodSharesNewIssues" xml:lang="en-US"> Stock Issued During Period, Shares, New Issues </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockIssuedDuringPeriodSharesNewIssues" xml:lang="en-US"> Shares of common stock, Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockIssuedDuringPeriodSharesNewIssues" xml:lang="en-US"> Public offering of shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="lab_141438H6KL791K10I358_us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="loc_350FKH75322F_us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_StockIssuedDuringPeriodValueNewIssues" xml:lang="en-US"> Stock Issued During Period, Value, New Issues </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_StockIssuedDuringPeriodValueNewIssues" xml:lang="en-US"> Proceeds from common stock issued </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_StockIssuedDuringPeriodValueNewIssues" xml:lang="en-US"> Gross proceeds of offering amount </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:to="lab_572HMJ97544H_us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_CommonStockForIssuedCashlessExerciseOfWarrants" xlink:label="loc_929216F4IJ579I98G136_atnm_CommonStockForIssuedCashlessExerciseOfWarrants"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_CommonStockForIssuedCashlessExerciseOfWarrants" xml:lang="en-US"> Common Stock For Issued Cashless Exercise Of Warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_CommonStockForIssuedCashlessExerciseOfWarrants" xml:lang="en-US"> Common shares issued for cashless exercise of warrants </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_CommonStockForIssuedCashlessExerciseOfWarrants" xml:lang="en-US"> Number of common shares issued for cashless exercise of warrants. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_CommonStockForIssuedCashlessExerciseOfWarrants" xlink:to="lab_141438H6KL791K10I358_atnm_CommonStockForIssuedCashlessExerciseOfWarrants"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_350FKH75322F_us-gaap_AllocatedShareBasedCompensationExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_AllocatedShareBasedCompensationExpense" xml:lang="en-US"> Allocated Share-based Compensation Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_AllocatedShareBasedCompensationExpense" xml:lang="en-US"> Stock based compensation expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_AllocatedShareBasedCompensationExpense" xlink:to="lab_572HMJ97544H_us-gaap_AllocatedShareBasedCompensationExpense"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares" xlink:label="loc_929216F4IJ579I98G136_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares" xml:lang="en-US"> Number of shares of restricted stock, vested </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares" xml:lang="en-US"> Issuance common shares to an employee for vested grant </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares" xlink:to="lab_141438H6KL791K10I358_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares" xlink:label="loc_350FKH75322F_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Number of Shares </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares" xml:lang="en-US"> Number of shares yet to issue of restricted stock, vested </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares" xlink:to="lab_572HMJ97544H_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:label="loc_929216F4IJ579I98G136_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xml:lang="en-US"> Stock options, term </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:to="lab_141438H6KL791K10I358_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xml:lang="en-US"> Stock options, vesting period </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:to="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_TerminationOfEmployees" xlink:label="loc_929216F4IJ579I98G136_atnm_TerminationOfEmployees"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_TerminationOfEmployees" xml:lang="en-US"> Termination Of Employees </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_TerminationOfEmployees" xml:lang="en-US"> Termination of employees </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_TerminationOfEmployees" xml:lang="en-US"> Termination of employee. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_TerminationOfEmployees" xlink:to="lab_141438H6KL791K10I358_atnm_TerminationOfEmployees"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" xlink:label="loc_350FKH75322F_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" xml:lang="en-US"> Fair value of stock options </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" xlink:to="lab_572HMJ97544H_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_FairValueAssumptionsExpectedDiscountRate" xlink:label="loc_929216F4IJ579I98G136_atnm_FairValueAssumptionsExpectedDiscountRate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_FairValueAssumptionsExpectedDiscountRate" xml:lang="en-US"> Fair Value Assumptions Expected Discount Rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_FairValueAssumptionsExpectedDiscountRate" xml:lang="en-US"> Fair value assumptions, expected discount rate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_FairValueAssumptionsExpectedDiscountRate" xml:lang="en-US"> Fair value of assumptions expected discount rate. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_FairValueAssumptionsExpectedDiscountRate" xlink:to="lab_141438H6KL791K10I358_atnm_FairValueAssumptionsExpectedDiscountRate"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward" xlink:label="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Shares Purchased for Award </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward" xml:lang="en-US"> Options to purchase common shares, cancelled </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward" xlink:to="lab_572HMJ97544H_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockOptionPlanExpense" xlink:label="loc_929216F4IJ579I98G136_us-gaap_StockOptionPlanExpense"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockOptionPlanExpense" xml:lang="en-US"> Stock or Unit Option Plan Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockOptionPlanExpense" xml:lang="en-US"> Total option expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_StockOptionPlanExpense" xlink:to="lab_141438H6KL791K10I358_us-gaap_StockOptionPlanExpense"/>
<loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentWarrantsExpirationDate" xlink:label="loc_350FKH75322F_invest_InvestmentWarrantsExpirationDate"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_invest_InvestmentWarrantsExpirationDate" xml:lang="en-US"> Investment Warrants Expiration Date </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_invest_InvestmentWarrantsExpirationDate" xml:lang="en-US"> Warrants expiration date </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_invest_InvestmentWarrantsExpirationDate" xlink:to="lab_572HMJ97544H_invest_InvestmentWarrantsExpirationDate"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_ClassOfWarrantOrRightDescription" xlink:label="loc_929216F4IJ579I98G136_atnm_ClassOfWarrantOrRightDescription"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_ClassOfWarrantOrRightDescription" xml:lang="en-US"> Class Of Warrant Or Right Description </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_atnm_ClassOfWarrantOrRightDescription" xml:lang="en-US"> Warrant expiration, description </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_141438H6KL791K10I358_atnm_ClassOfWarrantOrRightDescription" xml:lang="en-US"> Description of the purpose of issuing warrants. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_ClassOfWarrantOrRightDescription" xlink:to="lab_141438H6KL791K10I358_atnm_ClassOfWarrantOrRightDescription"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_WarrantsExercisedByWarrantHolders" xlink:label="loc_350FKH75322F_atnm_WarrantsExercisedByWarrantHolders"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_WarrantsExercisedByWarrantHolders" xml:lang="en-US"> Warrants Exercised By Warrant Holders </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_WarrantsExercisedByWarrantHolders" xml:lang="en-US"> Warrants exercised by warrant holders </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="lab_572HMJ97544H_atnm_WarrantsExercisedByWarrantHolders" xml:lang="en-US"> Warrants exercised by warrant holders. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_WarrantsExercisedByWarrantHolders" xlink:to="lab_572HMJ97544H_atnm_WarrantsExercisedByWarrantHolders"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueIssuedForServices" xlink:label="loc_929216F4IJ579I98G136_us-gaap_StockIssuedDuringPeriodValueIssuedForServices"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockIssuedDuringPeriodValueIssuedForServices" xml:lang="en-US"> Stock Issued During Period, Value, Issued for Services </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockIssuedDuringPeriodValueIssuedForServices" xml:lang="en-US"> Common shares for consulting services, value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_StockIssuedDuringPeriodValueIssuedForServices" xlink:to="lab_141438H6KL791K10I358_us-gaap_StockIssuedDuringPeriodValueIssuedForServices"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="loc_350FKH75322F_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xml:lang="en-US"> Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xml:lang="en-US"> Unrecognized compensation expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:to="lab_572HMJ97544H_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesIssuedForServices" xlink:label="loc_929216F4IJ579I98G136_us-gaap_StockIssuedDuringPeriodSharesIssuedForServices"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockIssuedDuringPeriodSharesIssuedForServices" xml:lang="en-US"> Stock Issued During Period, Shares, Issued for Services </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_StockIssuedDuringPeriodSharesIssuedForServices" xml:lang="en-US"> Common shares for consulting services, shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_StockIssuedDuringPeriodSharesIssuedForServices" xlink:to="lab_141438H6KL791K10I358_us-gaap_StockIssuedDuringPeriodSharesIssuedForServices"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharePrice" xlink:label="loc_350FKH75322F_us-gaap_SharePrice"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_SharePrice" xml:lang="en-US"> Share Price </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="lab_572HMJ97544H_us-gaap_SharePrice" xml:lang="en-US"> Share Price </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_SharePrice" xlink:to="lab_572HMJ97544H_us-gaap_SharePrice"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription" xlink:label="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Description </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription" xml:lang="en-US"> Agreement description </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription" xlink:to="lab_141438H6KL791K10I358_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDescription"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="loc_350FKH75322F_us-gaap_SubsequentEventTable"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_us-gaap_SubsequentEventTable" xml:lang="en-US"> Subsequent Event [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_us-gaap_SubsequentEventTable" xlink:to="lab_572HMJ97544H_us-gaap_SubsequentEventTable"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_SalesAgreementsMember" xlink:label="loc_929216F4IJ579I98G136_atnm_SalesAgreementsMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_atnm_SalesAgreementsMember" xml:lang="en-US"> Sales Agreements [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_atnm_SalesAgreementsMember" xlink:to="lab_141438H6KL791K10I358_atnm_SalesAgreementsMember"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_EmployeeMember" xlink:label="loc_350FKH75322F_atnm_EmployeeMember"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_EmployeeMember" xml:lang="en-US"> Employee [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_350FKH75322F_atnm_EmployeeMember" xlink:to="lab_572HMJ97544H_atnm_EmployeeMember"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="loc_929216F4IJ579I98G136_us-gaap_SubsequentEventLineItems"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_141438H6KL791K10I358_us-gaap_SubsequentEventLineItems" xml:lang="en-US"> Subsequent Event [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_929216F4IJ579I98G136_us-gaap_SubsequentEventLineItems" xlink:to="lab_141438H6KL791K10I358_us-gaap_SubsequentEventLineItems"/>
<loc xlink:type="locator" xlink:href="atnm-20170630.xsd#atnm_SubsequentEventsTextualsAbstract" xlink:label="loc_350FKH75322F_atnm_SubsequentEventsTextualsAbstract"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_572HMJ97544H_atnm_SubsequentEventsTextualsAbstract" xml:lang="en-US"> Subsequent Events Textuals [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="lab_572HMJ97544H_atnm_SubsequentEventsTextualsAbstract" xml:lang="en-US"> Subsequent Events (Textual) </label>
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2 Subsequent Filings that Reference this Filing

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

 3/25/22  Actinium Pharmaceuticals, Inc.    10-K       12/31/21   56:4.2M                                   EdgarAgents LLC/FA
 3/31/21  Actinium Pharmaceuticals, Inc.    10-K       12/31/20   56:3.5M                                   EdgarAgents LLC/FA
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