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Alaunos Therapeutics, Inc. – ‘10-Q’ for 9/30/23 – ‘EX-101.LAB’

On:  Tuesday, 11/14/23, at 7:35am ET   ·   For:  9/30/23   ·   Accession #:  950170-23-63354   ·   File #:  1-33038

Previous ‘10-Q’:  ‘10-Q’ on 8/14/23 for 6/30/23   ·   Latest ‘10-Q’:  This Filing   ·   3 References:   

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

11/14/23  Alaunos Therapeutics, Inc.        10-Q        9/30/23   59:6.9M                                   Donnelley … Solutions/FA

Quarterly Report   —   Form 10-Q

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   2.02M 
 2: EX-10.1     Material Contract                                   HTML     77K 
 3: EX-10.2     Material Contract                                   HTML     77K 
 4: EX-31.1     Certification -- §302 - SOA'02                      HTML     22K 
 5: EX-32.1     Certification -- §906 - SOA'02                      HTML     18K 
11: R1          Cover Page                                          HTML     70K 
12: R2          Condensed Balance Sheets                            HTML    106K 
13: R3          Condensed Balance Sheets (Parenthetical)            HTML     27K 
14: R4          Condensed Statements of Operations                  HTML     82K 
15: R5          Condensed Statements of Changes in Stockholders'    HTML     74K 
                Equity                                                           
16: R6          Condensed Statements of Cash Flows                  HTML    105K 
17: R7          Organization                                        HTML     37K 
18: R8          Financings                                          HTML     29K 
19: R9          Summary of Significant Accounting Policies          HTML     21K 
20: R10         Debt                                                HTML     52K 
21: R11         Fair Value Measurements                             HTML     60K 
22: R12         Net Loss per Share                                  HTML     39K 
23: R13         Related Party Transactions                          HTML     27K 
24: R14         Leases                                              HTML     26K 
25: R15         Commitments and Contingencies                       HTML     77K 
26: R16         Stock-Based Compensation                            HTML    139K 
27: R17         Warrants                                            HTML     34K 
28: R18         Restructuring                                       HTML     23K 
29: R19         Joint Venture                                       HTML     25K 
30: R20         Subsequent Events                                   HTML     21K 
31: R21         Summary of Significant Accounting Policies          HTML     28K 
                (Policies)                                                       
32: R22         Debt (Tables)                                       HTML     35K 
33: R23         Fair Value Measurements (Tables)                    HTML     50K 
34: R24         Net Loss per Share (Tables)                         HTML     37K 
35: R25         Stock-Based Compensation (Tables)                   HTML    138K 
36: R26         Organization - Additional Information (Details)     HTML     41K 
37: R27         Financings - Additional Information (Details)       HTML     63K 
38: R28         Debt - Schedule of Debt (Details)                   HTML     34K 
39: R29         Debt - Additional Information (Details)             HTML     68K 
40: R30         Fair Value Measurements - Assets and Liabilities    HTML     24K 
                Measured at Fair Value on Recurring Basis                        
                (Details)                                                        
41: R31         Fair Value Measurements (Details)                   HTML     40K 
42: R32         Net Loss Per Share - Potentially Dilutive Shares    HTML     28K 
                Excluded from Computation of Diluted Net Loss Per                
                Share (Details)                                                  
43: R33         Related Party Transactions - Additional             HTML     23K 
                Information (Details)                                            
44: R34         Commitments and Contingencies - Additional          HTML    172K 
                Information (Details)                                            
45: R35         Leases - Additional Information (Details)           HTML     43K 
46: R36         Stock-Based Compensation Expense Included in        HTML     33K 
                Statement of Operations (Details)                                
47: R37         Stock-Based Compensation - Additional Information   HTML     40K 
                (Details)                                                        
48: R38         Stock-Based Compensation - Fair Value of Stock      HTML     39K 
                Options Assumptions Using Black-Scholes Option                   
                Valuation Model (Details)                                        
49: R39         Stock-Based Compensation - Stock Option Activity    HTML     58K 
                Under Stock Option Plan (Details)                                
50: R40         Stock-Based Compensation - Summary of Non-Vested    HTML     32K 
                Restricted Stock (Details)                                       
51: R41         Warrants - Additional Information (Details)         HTML     86K 
52: R42         Restructuring - Additional Information (Details)    HTML     21K 
53: R43         Joint Venture - Additional Information (Details)    HTML     22K 
54: R44         Subsequent Events - Additional Information          HTML     25K 
                (Details)                                                        
57: XML         IDEA XML File -- Filing Summary                      XML     99K 
55: XML         XBRL Instance -- tcrt-20230930_htm                   XML   1.11M 
56: EXCEL       IDEA Workbook of Financial Report Info              XLSX    106K 
 6: EX-101.CAL  XBRL Calculations -- tcrt-20230930_cal               XML     91K 
 9: EX-101.DEF  XBRL Definitions -- tcrt-20230930_def                XML    771K 
 8: EX-101.LAB  XBRL Labels -- tcrt-20230930_lab                     XML   1.22M 
 7: EX-101.PRE  XBRL Presentations -- tcrt-20230930_pre              XML    939K 
10: EX-101.SCH  XBRL Schema -- tcrt-20230930                         XSD    178K 
58: JSON        XBRL Instance as JSON Data -- MetaLinks              435±   653K 
59: ZIP         XBRL Zipped Folder -- 0000950170-23-063354-xbrl      Zip    381K

‘EX-101.LAB’   —   XBRL Labels — tcrt-20230930_lab

This Exhibit is an XBRL File.

                                                                                                                                                                                
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<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentDescriptionOfVariableRateBasis" xlink:label="us-gaap_DebtInstrumentDescriptionOfVariableRateBasis"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetImpairmentCharges" xlink:label="us-gaap_AssetImpairmentCharges"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity"/>
<link:loc xlink:type="locator" xlink:href="tcrt-20230930.xsd#tcrt_PaymentForHistoricalCostsOfTheLicensedPrograms" xlink:label="tcrt_PaymentForHistoricalCostsOfTheLicensedPrograms"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidatedEntitiesAxis" xlink:label="srt_ConsolidatedEntitiesAxis"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock" xlink:label="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock"/>
<link:loc xlink:type="locator" xlink:href="tcrt-20230930.xsd#tcrt_NumberOfAdditionalOptionAvailableToTheUnderwriterToPurchase" xlink:label="tcrt_NumberOfAdditionalOptionAvailableToTheUnderwriterToPurchase"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="us-gaap_StatementOfFinancialPositionAbstract"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract"/>
<link:loc xlink:type="locator" xlink:href="tcrt-20230930.xsd#tcrt_WarrantsExpirationDate" xlink:label="tcrt_WarrantsExpirationDate"/>
<link:loc xlink:type="locator" xlink:href="tcrt-20230930.xsd#tcrt_BlackScholesModelMember" xlink:label="tcrt_BlackScholesModelMember"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="us-gaap_IncreaseDecreaseInReceivables"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditFacilityAxis" xlink:label="us-gaap_CreditFacilityAxis"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherIncomeAndExpensesAbstract" xlink:label="us-gaap_OtherIncomeAndExpensesAbstract"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel12And3Member" xlink:label="us-gaap_FairValueInputsLevel12And3Member"/>
<link:loc xlink:type="locator" xlink:href="tcrt-20230930.xsd#tcrt_PercentageOfOriginalPrincipalDueAsAFinalPayment" xlink:label="tcrt_PercentageOfOriginalPrincipalDueAsAFinalPayment"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UseOfEstimates" xlink:label="us-gaap_UseOfEstimates"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsOfDebtExtinguishmentCosts" xlink:label="us-gaap_PaymentsOfDebtExtinguishmentCosts"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<link:loc xlink:type="locator" xlink:href="tcrt-20230930.xsd#tcrt_PlacementAgentFeesAndOtherRelatedExpenses" xlink:label="tcrt_PlacementAgentFeesAndOtherRelatedExpenses"/>
<link:loc xlink:type="locator" xlink:href="tcrt-20230930.xsd#tcrt_MaximumSalesRevenueOnWhichBenchmarkPaymentsPayable" xlink:label="tcrt_MaximumSalesRevenueOnWhichBenchmarkPaymentsPayable"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LeaseholdImprovementsMember" xlink:label="us-gaap_LeaseholdImprovementsMember"/>
<link:loc xlink:type="locator" xlink:href="tcrt-20230930.xsd#tcrt_CRADAAgreementMember" xlink:label="tcrt_CRADAAgreementMember"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="us-gaap_ReceivablesNetCurrent"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:label="us-gaap_FairValueDisclosuresAbstract"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentRedemptionPeriodOneMember" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodOneMember"/>
<link:loc xlink:type="locator" xlink:href="tcrt-20230930.xsd#tcrt_WarrantTextBlock" xlink:label="tcrt_WarrantTextBlock"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
<link:loc xlink:type="locator" xlink:href="tcrt-20230930.xsd#tcrt_ClassOfWarrantOrRightDomainDomain" xlink:label="tcrt_ClassOfWarrantOrRightDomainDomain"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RestatementDomain" xlink:label="srt_RestatementDomain"/>
<link:loc xlink:type="locator" xlink:href="tcrt-20230930.xsd#tcrt_LicenseExpense" xlink:label="tcrt_LicenseExpense"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
<link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ClassOfWarrantOrRightAxis" xlink:label="us-gaap_ClassOfWarrantOrRightAxis"/>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AdditionalLoansCommitted_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Additional loans committed. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AdditionalLoansCommitted_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Additional Loans Committed </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AdditionalLoansCommitted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional Loans Committed </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Collaborative Arrangement and Arrangement Other than Collaborative [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Arrangements and Non-arrangement Transactions [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Document Transition Report </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Expected volatility </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Outstanding, at end of period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MilestonePayment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> One time milestone payment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MilestonePayment_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Milestone Payment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MilestonePayment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Milestone payment. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestructuringCostAndReserveLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Restructuring Cost and Reserve [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AnnualLicenseFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Annual License Fees </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AnnualLicenseFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Annual License Fees </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Geographical [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Geographical [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TwoThousandAndTwentyEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Two thousand and twenty equity incentive plan [Member]. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TwoThousandAndTwentyEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Two Thousand And Twenty Equity Incentive Plan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TwoThousandAndTwentyEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 2020 Equity Incentive Plan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other non-current liabilities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Other Liabilities, Noncurrent </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Increase (Decrease) in Prepaid Expense and Other Assets </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Increase (Decrease) in Prepaid Expense and Other Assets, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Prepaid expenses and other current assets </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_FullyDrawnAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fully drawn amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_FullyDrawnAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fully Drawn Amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_FullyDrawnAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fully drawn amount. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value, Inputs, Level 1 [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EquityAndTermBMilestoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Equity and Term B Milestone [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EquityAndTermBMilestoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Equity and Term B Milestone [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Collaboration revenue </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Revenue from Contract with Customer, Excluding Assessed Tax </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Revenue from Contract with Customer, Excluding Assessed Tax, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AtTheMarketOfferingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> At The Market Offering [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AtTheMarketOfferingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Market Offering [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LicensedProductsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> licensed products [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_OtherIncomeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other Income Expense [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_OtherIncomeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Other Income Expense [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_OtherIncomeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Other income expense member. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Method Investments and Joint Ventures [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaximumAmountOfRoyaltyPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Maximum amount of royalty payable. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaximumAmountOfRoyaltyPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Maximum Amount of Royalty Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaximumAmountOfRoyaltyPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Maximum royalty amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnTerminationOfLease_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Gain (Loss) on Termination of Lease </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnTerminationOfLease_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Gain on lease modification </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnTerminationOfLease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Gain on lease termination </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SiliconValleyBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Silicon Valley Bank [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SiliconValleyBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Silicon valley bank. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DescriptionOfOptionToTerminateTheAgreementUponNotMeetingCertainMilestones_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Represents Description Of Option To Terminate The Agreement Upon Not Meeting Certain Milestones. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DescriptionOfOptionToTerminateTheAgreementUponNotMeetingCertainMilestones_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Description Of Option To Terminate The Agreement Upon Not Meeting Certain Milestones </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DescriptionOfOptionToTerminateTheAgreementUponNotMeetingCertainMilestones_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Description Of option To terminate Agreement </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualWithRelationshipToEntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Title of Individual [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualWithRelationshipToEntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Relationship to Entity [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TcellReceptorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Tcell receptor [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TcellReceptorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> T-cell receptor </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Events [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Subsequent Events </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Aggregate Intrinsic Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WatermillAndRobertWPostmaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> WatermillAndRobertWPostmaMember </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WatermillAndRobertWPostmaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Watermill And Robert W Postma [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WatermillAndRobertWPostmaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Watermill And Robert W Postma. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfSubLicensingIncomePayableToRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Percentage of sub licensing income, attributable to related party. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfSubLicensingIncomePayableToRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Percentage of Sub licensing Income Payable to Related Party </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfSubLicensingIncomePayableToRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Portion of income payable to related party </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Assets and Liabilities Measured at Fair Value on Recurring Basis </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesSubscribedButUnissued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesSubscribedButUnissued_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock, Shares Subscribed but Unissued </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Repurchase of common stock (in Shares) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Repurchase of common stock (in Shares) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Repurchased During Period, Shares </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule of Stock by Class [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Stock by Class [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AggregateAmountPotentiallyReimburseableAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Aggregate Amount Potentially Reimburseable Amount. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AggregateAmountPotentiallyReimburseableAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Aggregate Amount Potentially Reimburseable Amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AggregateAmountPotentiallyReimburseableAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Reimbursement of historical costs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Shares </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Finance Lease, Liability, Noncurrent </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Lease liabilities, non-current </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Unamortized Discount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Debt Instrument, Unamortized Discount, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Unamortized discount on Term Loan Agreement </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToFundLongtermLoansToRelatedParties_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Payments to Fund Long-Term Loans to Related Parties </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToFundLongtermLoansToRelatedParties_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Payments to Fund Long-term Loans to Related Parties </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Related Party Transactions [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Balance Sheet Location [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Balance Sheet Location [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Assets, Current </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total current assets </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaximumAmountOfAdditionalMilestonesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Maximum amount of additional milestones payable. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaximumAmountOfAdditionalMilestonesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Maximum Amount of Additional Milestones Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaximumAmountOfAdditionalMilestonesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Expected additional milestones payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VestingDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Vesting [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Liabilities and Equity </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total liabilities and stockholders' equity </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Address, State or Province </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Issued During Period, Value, New Issues </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Aggregate offering price </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Issuance of common stock, net of expenses </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IssuanceAndSaleOfCommonStockInPublicOfferingPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Issuance and sale of common stock in public offering price per share. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IssuanceAndSaleOfCommonStockInPublicOfferingPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Issuance And Sale of Common Stock In Public Offering Price Per Share </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IssuanceAndSaleOfCommonStockInPublicOfferingPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Issuance & sale of common stock in public offering price per share </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Ending Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Beginning Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Outstanding options issued </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Stock option, outstanding </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PotentialBenchmarkPaymentsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Represents Potential Benchmark Payments Payable. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PotentialBenchmarkPaymentsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Potential Benchmark Payments Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PotentialBenchmarkPaymentsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Potential Benchmark Payments Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Weighted-average grant date fair value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Trading Symbol </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Redemption, Period [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock, Shares, Issued </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock, shares issued </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Common Stock, Shares, Issued, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingCostsAndExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Operating Costs and Expenses [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingCostsAndExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Operating expenses: </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AgreementTypeAxisAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Agreement Type Axis [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Prepaid Expense and Other Assets, Current </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Prepaid expenses and other current assets </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> MA </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> MA [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Boston, MA </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Consolidated Entities [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Line of Credit Facility, Interest Rate During Period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Interest rate </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule of Long-Term Debt Instruments [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Shares, Outstanding </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Balance (in shares) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Balance (in shares) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Line of Credit Facility, Remaining Borrowing Capacity </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt remaining borrowing capacity </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock, Capital Shares Reserved for Future Issuance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock reserved for future issuance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsidiaryOrEquityMethodInvesteeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Subsidiary or Equity Method Investee [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Current portion of long-term debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Long-Term Debt, Current Maturities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Less: current portion of long-term debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Long-term Debt, Current Maturities, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Less: current portion of long-term debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Address, City or Town </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Related Party Transaction [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Related Party Transaction [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Disclosure [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DebtInstrumentPrincipalPaymentsPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Debt instrument principal payments percentage. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DebtInstrumentPrincipalPaymentsPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt instrument Principal Payments Percentage </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DebtInstrumentPrincipalPaymentsPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument principal payments percentage </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Event [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Subsequent Event [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Event Type [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Payment Arrangement, Tranche Two [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Term B Tranche [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ChiefExecutiveOfficerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Chief Executive Officer [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ChiefExecutiveOfficerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Chief Executive Officer </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_GainLossOnModificationOfLease_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Gain (loss) on modification of lease. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_GainLossOnModificationOfLease_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Gain (Loss) On Modification Of Lease </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_GainLossOnModificationOfLease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Gain (Loss) On Modification Of Lease </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Liabilities, Current [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current liabilities: </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Assets, Current [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current assets: </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Preferred Stock, Par or Stated Value Per Share </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Preferred stock par value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Statement of Stockholders' Equity [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Lender Name [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityFrequencyOfPaymentAndPaymentTerms_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Line of Credit Facility, Frequency of Payment and Payment Terms </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityFrequencyOfPaymentAndPaymentTerms_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Description of payment terms </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ContributionPayableOnPerAnnumBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Contribution payable on per annum basis </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ContributionPayableOnPerAnnumBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Contribution Payable on Per Annum Basis </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ContributionPayableOnPerAnnumBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Contribution payable on per annum basis. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Maturity Date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt Instrument, maturity date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Property, Plant and Equipment, Net </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Property, Plant and Equipment, Net, Ending Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Property, Plant and Equipment, Net, Beginning Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Property and equipment, net </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Property, Plant and Equipment, Net, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Class of Stock [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Class of Stock [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestructuringCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restructuring costs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestructuringCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Restructuring Charges </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestructuringCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Restructuring Charges, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Scenario [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Collaborative Arrangement and Arrangement Other than Collaborative [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Type of Arrangement and Non-arrangement Transactions [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Central Index Key </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TenthScheduledPaymentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Tenth Scheduled Payment Member </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TenthScheduledPaymentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Tenth Scheduled Payment [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TenthScheduledPaymentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Tenth Scheduled Payment. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Finance Lease, Liability, Current </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinanceLeaseLiabilityCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Lease liabilities, current </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Class of Warrant or Right, Number of Securities Called by Warrants or Rights </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Warrants </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Number of securities into which the class of warrant converted </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Plan Name [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Plan Name [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_FinancingArrangementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Includes disclosures related to financing receivables and financing guarantees in which the company is the guarantor. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_FinancingArrangementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Financing Arrangements Disclosure [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_FinancingArrangementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Financings </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermLoanAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Term Loan Agreement [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermLoanAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Term Loan Agreement [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Assets, Fair Value Disclosure </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Assets, Fair Value Disclosure </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Assets, Fair Value Disclosure, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseOptionToExtend_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Lease term, description </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseOptionToExtend_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Lessee, Operating Lease, Option to Extend </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Liabilities, Current </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total current liabilities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Tax Identification Number </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Increase (Decrease) in Operating Capital [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change in operating assets and liabilities: </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Deposits Assets, Noncurrent </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deposits </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Financial Instruments [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Investment, Name [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AwardTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Award Type [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AwardTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Award Type [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeasesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Lessee, Operating Leases [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeasesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Leases </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AccrualsPriorToFirstMarketingApproval_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Payments due prior to the first marketing approval </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AccrualsPriorToFirstMarketingApproval_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Accruals Prior to First Marketing Approval </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AccrualsPriorToFirstMarketingApproval_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Payments due prior to the first marketing approval for TCR products. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PatentAndTechnologyLicenseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Patent and technology license agreement. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PatentAndTechnologyLicenseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Patent And Technology License Agreement [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Restricted Stock [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restricted Stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Unvested Restricted Stock [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Plan Name [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Plan Name [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EdenBiocellMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Eden Biocell. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EdenBiocellMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Eden Biocell [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Geographical [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Geographical [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Assets </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total assets </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Operating Lease, Right-of-Use Asset </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Right of use assets </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Registrant Name </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Issuance Costs, Net </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Issuance costs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Debt Issuance Costs, Net, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOrSaleOfEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash proceeds from sale of equity </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOrSaleOfEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds from Issuance or Sale of Equity </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOrSaleOfEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Proceeds from Issuance or Sale of Equity, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Related Party, Type [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Related Party [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Retained Earnings (Accumulated Deficit) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Retained Earnings (Accumulated Deficit), Ending Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Retained Earnings (Accumulated Deficit), Beginning Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Retained Earnings (Accumulated Deficit), Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Accumulated deficit </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Accumulated deficit </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Supplemental Cash Flow Information [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Supplementary disclosure of cash flow information: </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Retained Earnings [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accumulated Deficit </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Class of Stock [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Class of Stock [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Ending Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Beginning Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Minimum [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Minimum </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DescriptionOfFirstBenchmarkPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Represents Description Of First Benchmark Payable. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DescriptionOfFirstBenchmarkPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Description Of First Benchmark Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DescriptionOfFirstBenchmarkPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Description Of First Benchmark Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Proceeds from the exercise of stock options </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds from Stock Options Exercised </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Significant Accounting Policies [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Summary of Significant Accounting Policies </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InitialBorrowingZeroMilestonesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Initial borrowing zero milestones. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InitialBorrowingZeroMilestonesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Initial Borrowing Zero Milestones [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InitialBorrowingZeroMilestonesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Initial Borrowing Zero Milestones [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeveranceCosts1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Termination benefits </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeveranceCosts1_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Severance Costs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseholdImprovementsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Leasehold improvements </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseholdImprovementsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Leasehold Improvements, Gross </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Forecast [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Forecast [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Forecast[Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Payment Arrangement, Tranche One [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Term A Tranche [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Expected volatility, Minimum </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Component [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity Component [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Employee Stock Option [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock options [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ShareSubscriptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share Subscription Agreement </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ShareSubscriptionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share Subscription Agreement [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Adjustments to reconcile net loss to net cash used in operating activities: </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Measurement Frequency [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Measurement Frequency [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted Average Exercise Price </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Disclosure [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NonVestedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Non Vested Stock [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NonVestedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Non Vested Stock [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NonVestedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unvested Stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Basis Spread on Variable Rate </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Line of credit facility, interest rate </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Current Reporting Status </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock, Shares Authorized </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock, shares authorized </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Research and Development Expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Research and development </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Research and Development Expense, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Research and development expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> ASSETS: </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Assets [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds from Issuance of Common Stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Proceeds from the issuance of common stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Options available for future grant </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock $0.001 par value; 520,000,000 shares authorized, 240,627,055 shares issued and outstanding at September 30, 2023 and 420,000,000 shares authorized, 240,410,761 shares issued and outstanding at December 31, 2022 </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock, Value, Issued </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Common Stock, Value, Issued, Ending Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Common Stock, Value, Issued, Beginning Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Common Stock, Value, Issued, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Repayment of long-term debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Repayments of Long-Term Debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Repayments of Long-Term Debt, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PaymentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Payment Type [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Laboratory equipment, gross proceeds </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Proceeds from Sale of Property, Plant, and Equipment, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds from Sale of Property, Plant, and Equipment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Proceeds from the disposal of property and equipment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Accrued Liabilities, Current </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued expenses </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Accrued Liabilities, Current, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Current Fiscal Year End Date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Payment Arrangement, Noncash Expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Share-based Payment Arrangement, Noncash Expense, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Stock-based compensation </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PaymentTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Payment Type [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Operating Income (Loss) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Loss from operations </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Loss from operations </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IntrexonCorporationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Intrexon Corporation/Precigen [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IntrexonCorporationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Intrexon Corporation </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Research and Development Expense [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Research and Development Expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Research and Development [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermBTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Term B Tranche. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermBTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Term B Tranche [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermBTrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Term B Tranche [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RoyaltyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Royalty [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RoyaltyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Royalty [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Expected volatility, Maximum </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Fair Value Assumptions Expected volatility Rate Maximum </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NumberOfEmployeesExpectedToRemain_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number Of Employees Expected To Remain </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NumberOfEmployeesExpectedToRemain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Employees Expected To Remain </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NumberOfEmployeesExpectedToRemain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of employees expected to remain </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SecuritiesPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Securities Purchase Agreement. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SecuritiesPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Securities Purchase Agreement [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Granted </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Stock options, granted </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeasesOperatingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Leases, Operating [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_StockOptionsAndRestrictedStockAwardsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Stock Options and Restricted Stock Awards </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_StockOptionsAndRestrictedStockAwardsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Options and Restricted Stock Awards [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_StockOptionsAndRestrictedStockAwardsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Stock-Based Compensation </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Issued During Period, Shares, Restricted Stock Award, Gross </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Restricted stock awards (in shares) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Outstanding, at end of period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LicenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> License [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Face Amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument, face amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Loan and Security Agreement </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Other Nonoperating Income (Expense) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Other Nonoperating Income (Expense), Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other income, net </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostsAndExpensesRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fees and Expenses, Related Party </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostsAndExpensesRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Costs and Expenses, Related Party </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change in fair value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BankingAndThriftInterestAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Banking and Thrift, Interest [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingencyAccrualCarryingValueCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued litigation liability </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingencyAccrualCarryingValueCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Loss Contingency, Accrual, Current </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Events [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SvbWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Svb Warrants [Member]. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SvbWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Svb Warrants [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SvbWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> SVB Warrants [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DueDateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Due date [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EightScheduledPaymentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Eighth Scheduled Payment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EightScheduledPaymentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Eighth Scheduled Payment. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EightScheduledPaymentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Eighth Scheduled Payment [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Commitments and Contingencies Disclosure [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other non-current assets </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Other Assets, Noncurrent </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Other Assets, Noncurrent, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Depreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Depreciation </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Depreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Depreciation </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Depreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Depreciation, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Interest Paid, Excluding Capitalized Interest, Operating Activities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash paid for interest </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Warrants member. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Warrants [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Warrants [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Stockholders' equity </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Equity, Attributable to Parent [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Lease, Cost [Table Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Components of Lease Expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredDebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Secured Debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredDebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Secured Debt [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Entity [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Gain (Loss) on Disposition of Property Plant Equipment, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Gain (Loss) on Disposition of Property Plant Equipment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Loss on disposal of equipment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Line of Credit Facility, Maximum Borrowing Capacity </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additonal tranche facility </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Maximum borrowing capacity under the credit facility </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TerminationCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Termination costs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TerminationCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Termination Costs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TerminationCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Termination costs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Earnings Per Share [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InducementStockOptionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Inducement Stock Options </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InducementStockOptionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Inducement Stock Options [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InducementStockOptionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Inducement stock options member. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaximumRoyaltyAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Maximum royalty amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaximumRoyaltyAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Maximum Royalty Amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaximumRoyaltyAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Maximum amount of royalty. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Lessee, Operating Lease, Liability, Maturity </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_EquityMethodInvesteeNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Investment, Name [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDateRangeStart1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument, initial maturity date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDateRangeStart1_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Maturity Date Range, Start </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Accounting Policies [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementScenarioAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Scenario [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_RelatedPartyTransactionExpensesFromTransactionsWithRelatedPartyAdvisoryFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Related party transaction expenses from transactions with related party advisory fees. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_RelatedPartyTransactionExpensesFromTransactionsWithRelatedPartyAdvisoryFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Related Party Transaction Expenses From Transactions With Related Party Advisory Fees </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Sale of Stock, Consideration Received on Transaction </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Issuance of common stock in connection with a public offering, net </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockConsiderationReceivedOnTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Sale of stock consideration received on transaction </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Share-based Compensation Arrangement by Share-based Payment Award [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Option [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockOptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Stock Option [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MdAndersonAgreementAndWorldwideLicenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> MD Anderson Agreement and Worldwide License [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MdAndersonAgreementAndWorldwideLicenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> MD Anderson Agreement and Worldwide License. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Earnings Per Share, Basic, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Earnings Per Share, Basic </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Earnings per share, Basic </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Commitments and contingencies (Note 9) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Commitments and Contingencies </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Income Statement [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Related Party, Type [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Related Party [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WarrantsDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Warrants Disclosure [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Issuance of warrants </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Adjustments to Additional Paid in Capital, Warrant Issued </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TangibleAssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fixed asset impairment charges </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TangibleAssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Tangible Asset Impairment Charges </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TangibleAssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Tangible Asset Impairment Charges, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Statistical Measurement [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Range [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Net Cash Provided by (Used in) Operating Activities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net cash used in operating activities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Proceeds from collateral account </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds from Issuance of Debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> All Award Types </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity Award [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Document Period End Date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Statistical Measurement [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Range [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Commitments and Contingencies Disclosure [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Commitments and Contingencies </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeasePayments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Final payment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeasePayments_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Operating Lease, Payments </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt Instrument Redemption Period Two Member </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Redemption, Period Two [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Earnings Per Share, Diluted, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Earnings Per Share, Diluted </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Earnings per share, Diluted </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductsAndServicesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Product and Service [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TriArmMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Tri Arm </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TriArmMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Tri Arm [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TriArmMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> TriArm [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NonOperatingIncomeExpenseInducementOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Non Operating Income Expense Inducement Of Warrants. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NonOperatingIncomeExpenseInducementOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Non Operating Income Expense Inducement Of Warrants </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NonOperatingIncomeExpenseInducementOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Non-cash inducement warrant expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Name [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Hierarchy and NAV [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value Hierarchy [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Options exercisable, at end of period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfPrepaymentPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Prepayment premium percentage </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfPrepaymentPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Percentage of prepayment premium </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfPrepaymentPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Percentage of prepayment premium </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other non-current liabilities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Increase (Decrease) in Other Noncurrent Liabilities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_OneTimeBenchmarkPaymentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> One Time Benchmark Payments [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value, Recurring [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value, Measurements, Recurring [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PocketExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Pocket expenses </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PocketExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Pocket Expenses </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PocketExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Pocket expenses. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Additional Paid in Capital, Common Stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Additional Paid in Capital, Common Stock, Ending Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Additional Paid in Capital, Common Stock, Beginning Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional paid-in capital </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Shares </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AgreementTerminationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Termination Date of CRADA Agreement </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AgreementTerminationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Agreement Termination Date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AgreementTerminationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Agreement termination date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Repurchase of common stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Repurchase of common stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Payments for Repurchase of Common Stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Exercise of employee stock options (in shares) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Exercised </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Liabilities and Equity [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> LIABILITIES AND STOCKHOLDERS' EQUITY </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_BeforeAugustSixTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Before august six two thousand twenty two. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_BeforeAugustSixTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Before August Six Two Thousand Twenty Two [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_BeforeAugustSixTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> On or before August 6, 2022 [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Remaining Contractual Term [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Remaining Contractual Term [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted Average Contractual Term (Years) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionConvertedInstrumentWarrantsOrOptionsIssued1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Warrants issued </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtConversionConvertedInstrumentWarrantsOrOptionsIssued1_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Conversion, Converted Instrument, Warrants or Options Issued </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Address, Postal Zip Code </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ObligationsDueUnderContract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Obligations due under contract. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ObligationsDueUnderContract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Obligations Due Under Contract </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ObligationsDueUnderContract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Obligations due under contract </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Interactive Data Current </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrivatePlacementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Private Placement [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Increase (Decrease) in Accounts Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accounts payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Increase (Decrease) in Accounts Payable, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Credit Facility [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TextBlockAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Text Block [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfCommissionOnGrossProceedsFromSaleOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Percentage of commission on gross proceeds from sale of common stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfCommissionOnGrossProceedsFromSaleOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Percentage Of Commission On Gross Proceeds From Sale Of Common Stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfCommissionOnGrossProceedsFromSaleOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Sales commission as a percentage of gross proceeds </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Granted </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RestatementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Revision of Prior Period [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_StrategicAdvisorName_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Strategic advisor name. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_StrategicAdvisorName_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Strategic Advisor Name </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_StrategicAdvisorName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Strategic advisor name </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Exercised </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Exercise price of stock options </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Incorporation, State or Country Code </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Components [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity Components [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MilestonePaymentsMaximumAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Milestone payments maximum amount. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MilestonePaymentsMaximumAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Milestone Payments, Maximum Amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MilestonePaymentsMaximumAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Milestone maximum payment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestructuringAndRelatedActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Restructuring and Related Activities [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Vested </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Local Phone Number </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermBMilestoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Term B Milestone [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermBMilestoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Term B Milestone [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Sale of Stock [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Options exercisable, at end of period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_StockOfferedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Sale of stock during period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_StockOfferedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Stock offered during period shares. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_StockOfferedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Offered During Period Shares </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_StockOfferedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Stock issued during period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restricted cash </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Restricted Cash, Current </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Statement of Cash Flows [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementInputsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementInputsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value Measurements </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock, Par or Stated Value Per Share </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Common stock, par value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ClassOfWarrantOrRightAxisAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Class Of Warrant Or Right Axis. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ClassOfWarrantOrRightAxisAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Class Of Warrant Or Right Axis [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Expected recognition period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Long-Lived Tangible Asset [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Maximum [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Maximum </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ZiopLicenseAgreementWithTheNationalCancerInstituteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> ZiopLicenseAgreementWithTheNationalCancerInstituteMember </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ZiopLicenseAgreementWithTheNationalCancerInstituteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Ziop License Agreement With The National Cancer Institute [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ZiopLicenseAgreementWithTheNationalCancerInstituteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Ziop License Agreement With The National Cancer Institute [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds from Issuance of Private Placement </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Proceeds from private placement </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TheUniversityOfTexasMDAndersonCancerCenterAndTheTexasAAndMUniversitySystemMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> The University Of Texas M D Anderson Cancer Center And The Texas A And M University System </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TheUniversityOfTexasMDAndersonCancerCenterAndTheTexasAAndMUniversitySystemMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> The University Of Texas M D Anderson Cancer Center And The Texas A And M University System [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TheUniversityOfTexasMDAndersonCancerCenterAndTheTexasAAndMUniversitySystemMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> The University of Texas MD Anderson Cancer Center and The Texas A & M University System </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Dividends_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Dividends </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Dividends_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Dividends </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Dividends_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Dividends, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PaymentUnderLicenseAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Payment under license agreement </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PaymentUnderLicenseAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Payment Under License Agreement </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PaymentUnderLicenseAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Payment under license agreement. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ThresholdCommitmentPeriodForExerciseOfRightsToParticipateInFutureOfferings_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Threshold commitment period for exercise of rights to participate in future offerings. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ThresholdCommitmentPeriodForExerciseOfRightsToParticipateInFutureOfferings_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Threshold Commitment Period for Exercise of Rights to Participate in Future Offerings </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ThresholdCommitmentPeriodForExerciseOfRightsToParticipateInFutureOfferings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Threshold period for exercise or conversion of stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> APIC, Share-Based Payment Arrangement, Increase for Cost Recognition </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Stock-based compensation </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value, Recurring and Nonrecurring [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value Measurements, Recurring and Nonrecurring [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net decrease in cash, cash equivalents and restricted cash </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> General and Administrative Expense [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> General and Administrative Expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> General and Administrative [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IncreaseDecreaseInOperatingDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Deposits </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IncreaseDecreaseInOperatingDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease in Operating Deposits </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IncreaseDecreaseInOperatingDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Increase decrease in operating deposits. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Cancelled </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Issued During Period, Shares, Restricted Stock Award, Forfeited </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cancelled restricted common stock (in shares) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AdditionalPaidInCapitalCommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional Paid In Capital </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AdditionalPaidInCapitalCommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Additional Paid in Capital, Common Stock [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AdditionalPaidInCapitalCommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Potentially Dilutive Shares Excluded from Computation of Diluted Net Loss Per Share </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> City Area Code </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Research and Development Arrangement, Contract to Perform for Others, Type [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Net Cash Provided by (Used in) Operating Activities [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash flows from operating activities: </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AmountOfPrepaymentsPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Amount Of Prepayments Premium. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AmountOfPrepaymentsPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Amount Of Prepayments Premium </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AmountOfPrepaymentsPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amount of prepayments premium </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AggregatePotentialBenchmarkPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Aggregate potential benchmark payments. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AggregatePotentialBenchmarkPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Aggregate potential benchmark payments </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AggregatePotentialBenchmarkPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Aggregate potential benchmark payments </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MdAndersonLicenseAndTheResearchAndDevelopmentAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> MD Anderson License and the Research and Development Agreement. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MdAndersonLicenseAndTheResearchAndDevelopmentAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> MD Anderson License and the Research and Development Agreement [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_RelatedPartyTransactionReimbursedAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Related Party Transaction Reimbursed Amount. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_RelatedPartyTransactionReimbursedAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Related Party Transaction Reimbursed Amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_RelatedPartyTransactionReimbursedAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Related party transaction, reimbursed amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_VinetiIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Vineti Inc. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_VinetiIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Vineti Inc [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PropertyAndEquipmentAndRightOfUseAssetsImpairment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Property and equipment and right-of-use assets impairment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PropertyAndEquipmentAndRightOfUseAssetsImpairment_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Property And Equipment And Right Of Use Assets Impairment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PropertyAndEquipmentAndRightOfUseAssetsImpairment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Property and equipment and right of use assets impairment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DebtInstrumentPrepaymentPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Prepayment premium </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DebtInstrumentPrepaymentPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Prepayment Premium </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DebtInstrumentPrepaymentPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Debt instrument prepayment premium. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> General and Administrative Expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> General and Administrative Expense, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> General and administrative </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Weighted Average Number of Shares Outstanding, Basic, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Weighted Average Number of Shares Outstanding, Basic </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted Average Number Of Shares Outstanding Basic </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TwoThousandAndThreeEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Two Thousand And Three Equity Incentive Plan </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TwoThousandAndThreeEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Two Thousand And Three Equity Incentive Plan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TwoThousandAndThreeEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 2003 Equity Incentive Plan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Future termination benefit payments resulting from the strategic reprioritization </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Restructuring and Related Costs [Table Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EquityDistributionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity Distribution Agreement [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EquityDistributionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Equity distribution agreement. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EquityDistributionAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Distribution Agreement [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Research and Development Arrangement, Contract to Perform for Others, Type [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_GainLossOnOperatingLeaseModification_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Gain (loss) on operating lease modification. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_GainLossOnOperatingLeaseModification_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Gain (Loss) On Operating Lease Modification </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_GainLossOnOperatingLeaseModification_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Gain on lease modification </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_GainLossOnOperatingLeaseModification_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Gain on lease modification </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Net Cash Provided by (Used in) Financing Activities [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash flows from financing activities: </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Statement [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Statement [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Payment Arrangement, Option, Activity [Table Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Stock Option Activity under Stock Option Plan </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule of Related Party Transactions, by Related Party [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Related Party Transactions, by Related Party [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value of Stock Options Assumptions Using Black-Scholes Option Valuation Model </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MinimumRoyaltiesAmountPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Represents Minimum Royalties Amount Payable. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MinimumRoyaltiesAmountPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Minimum Royalties Amount Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MinimumRoyaltiesAmountPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Minimum royalties amount payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Document Fiscal Period Focus </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Fair Value, Net Asset (Liability), Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value, Net Asset (Liability) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair value of assets (liabilities) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermATrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Term A Tranche [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermATrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Term A Tranche [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermATrancheMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Term A Tranche [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Related Party Transactions Disclosure [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Related Party Transactions </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Statement [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Statement [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EdenBioCellMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Eden Bio Cell [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EdenBioCellMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Eden Bio Cell </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Antidilutive securities excluded from computation of earnings per share, amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CommitmentsAndContingenciesDisclosureTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Commitments and Contingencies Disclosure [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CommitmentsAndContingenciesDisclosureTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Commitments and Contingencies Disclosure [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CommitmentsAndContingenciesDisclosureTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Commitments and Contingencies Disclosure [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AggregateBenchmarkPaymentsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Represents Aggregate Benchmark Payments Payable. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AggregateBenchmarkPaymentsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Aggregate Benchmark Payments Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AggregateBenchmarkPaymentsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Aggregate Benchmark Payments Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Event [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Warrant [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Warrants [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_FairValueOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair value of warrants </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_FairValueOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value of Warrants </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_FairValueOfWarrants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fair Value of Warrants </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RoyaltyExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Royalty Expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RoyaltyExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Royalty amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common Stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingencyDamagesSoughtValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unspecified monetary damages </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingencyDamagesSoughtValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Loss Contingency, Damages Sought, Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsOutstandingMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Warrants and Rights Outstanding, Maturity Date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsOutstandingMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Warrant Expiry date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CollaborationAgreementWithSolasiaPharmaKkMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Collaboration agreement with solasia pharma K.K. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CollaborationAgreementWithSolasiaPharmaKkMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Collaboration Agreement With Solasia Pharma KK [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensationNoncash_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Employee Benefit and Share-Based Payment Arrangement, Noncash </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensationNoncash_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Employee Benefit and Share-based Payment Arrangement, Noncash, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensationNoncash_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Stock-based compensation </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Cash and Cash Equivalents, at Carrying Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Cash and Cash Equivalents, at Carrying Value, Ending Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Cash and Cash Equivalents, at Carrying Value, Beginning Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash and cash equivalents </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Cash and Cash Equivalents, at Carrying Value, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Cash balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Repurchase of common stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Repurchased During Period, Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Options exercisable, at end of period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Stock-Based Compensation Expense on All Employee and Non-Employee Awards </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AgreementTerminationNoticePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Agreement termination notice period. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AgreementTerminationNoticePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Agreement Termination Notice Period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AgreementTerminationNoticePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Agreement termination, notice period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Common Stock, Shares Outstanding </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Antidilutive Securities, Name [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Antidilutive Securities, Name [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MdAndersonWarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Md Anderson Warrant [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MdAndersonWarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> MD Anderson Warrant [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MdAndersonWarrantMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> MD Anderson Warrant [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule of Debt [Table Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CoverAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Cover [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VestingAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Vesting [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Document Fiscal Year Focus </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ClassOfWarrantOrRightWarrantsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Warrants exercised </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ClassOfWarrantOrRightWarrantsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Class Of Warrant Or Right Warrants Exercised </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ClassOfWarrantOrRightWarrantsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Class of warrant or right warrants exercised. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingencyDamagesPaidValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Settlement amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingencyDamagesPaidValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Loss Contingency, Damages Paid, Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingencyAccrualPayments_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Loss Contingency Accrual, Payments </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LitigationSettlementExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Litigation expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LitigationSettlementExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Litigation Settlement, Expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Sale of Stock [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AgreementTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Agreement Type [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExtinguishmentOfDebtAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Extinguishment of Debt, Amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExtinguishmentOfDebtAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Extinguishment of debt, amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Granted </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Security Exchange Name </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ZiopharmMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Ziopharm [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ZiopharmMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Ziopharm [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> New Accounting Pronouncements, Policy [Policy Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> New Accounting Pronouncements </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Preferred Stock, Shares Authorized </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Preferred stock, shares authorized </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Laboratory equipment carrying value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Property, Plant and Equipment, Gross </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Property, Plant and Equipment, Gross, Ending Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Property, Plant and Equipment, Gross, Beginning Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Property, Plant and Equipment, Gross, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cancelled </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IntendedPercentageOfResductionInWorkforce_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Intended percentage of reduction in workforce </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IntendedPercentageOfResductionInWorkforce_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Intended percentage of resduction in workforce </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IntendedPercentageOfResductionInWorkforce_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Intended percentage of resduction in workforce </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LegalEntityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Legal Entity [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LegalEntityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Legal Entity [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Financial Instrument [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_RoyaltiesAmountPayableThereafter_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Royalties amount payable thereafter </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_RoyaltiesAmountPayableThereafter_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Royalties Amount Payable thereafter </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_RoyaltiesAmountPayableThereafter_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Royalties amount payable thereafter. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsOutstandingTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Warrants and Rights Outstanding, Term </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WarrantsAndRightsOutstandingTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Warrants fully vested upon issuance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Issued During Period, Value, Stock Options Exercised </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Exercise of employee stock options </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Emerging Growth Company </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Amendment Flag </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Restricted stock awards </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Issued During Period, Value, Restricted Stock Award, Gross </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restricted stock awards </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EquityMilestoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Equity milestone. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_EquityMilestoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Milestone [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfPrepaymentsPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of prepayments premium </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfPrepaymentsPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Percentage Of Prepayments Premium </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfPrepaymentsPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Percentage of prepayments premium. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Accounting Standards Update [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Basis of Presentation </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Basis of Accounting, Policy [Policy Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Method Investment, Ownership Percentage </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Equity interest in affilated entity </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NewWarrantsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> New Warrants [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Restructuring and Related Activities Disclosure [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restructuring </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ZeroMilestoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Zero Milestone [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ZeroMilestoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Zero Milestone [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Variable Rate [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Class of Warrant or Right, Number of Securities Called by Each Warrant or Right </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of warrants issued </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_OutsideTwoThousandTwelvePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Outside two thousand twelve plan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_OutsideTwoThousandTwelvePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Outside Two Thousand Twelve Plan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_OutsideTwoThousandTwelvePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Outside 2012 Plan </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SiliconValleyBankLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Silicon Valley Bank loan. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SiliconValleyBankLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Silicon Valley Bank Loan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SiliconValleyBankLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Silicon Valley Bank Loan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Securities Act File Number </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CantorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Cantor. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CantorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Cantor [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CantorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cantor [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Term loan member </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Term Loan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Term Loan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Long-term debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Long-Term Debt, Excluding Current Maturities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Long-term debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Cash, cash equivalents and restricted cash, beginning of period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash, cash equivalents and restricted cash </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Cash and cash equivalents, end of period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_UnderwriterParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Underwriter par or stated value per share. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_UnderwriterParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Underwriter Par or Stated Value Per Share </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_UnderwriterParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Underwriter par or stated value per share </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IncreaseDecreaseInRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> The increase (decrease) during the period in the carrying value of right of use asset reported as assets. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IncreaseDecreaseInRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Right Of Use Asset </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IncreaseDecreaseInRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Decrease in the carrying amount of right-of-use assets </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Payment Arrangement [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IssuanceOfCommonStockNetOfExpensesInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Issuance of common stock, net of expenses in shares. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IssuanceOfCommonStockNetOfExpensesInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Issuance Of Common Stock Net Of Expenses In Shares </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IssuanceOfCommonStockNetOfExpensesInShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Issuance of common stock, net of expenses (in shares) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PrincipalPaymentBeginningDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Principal payment beginning date. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PrincipalPaymentBeginningDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Principal Payment Beginning Date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PrincipalPaymentBeginningDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Principal payment beginning date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Accounts Payable, Current </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accounts payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Accounts Payable, Current, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Ending Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Beginning Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentPeriodicPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Periodic Payment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentPeriodicPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument, periodic payment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentPeriodicPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Debt Instrument, Periodic Payment, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Operating Expenses </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total operating expenses </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Expected life in years </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Fair Value Assumptions Expected Term1 </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollaborativeArrangementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Collaborative Arrangement [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine2_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Address, Address Line Two </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule of Defined Benefit Plans Disclosures [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Small Business </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Shell Company </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TwoThousandAndTwelveEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Two Thousand And Twelve Equity Incentive Plan </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TwoThousandAndTwelveEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Two Thousand And Twelve Equity Incentive Plan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TwoThousandAndTwelveEquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 2012 Equity Incentive Plan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> (Increase) decrease in: </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Increase (Decrease) in Operating Assets [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule of Nonvested Share Activity [Table Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Summary of Unvested Restricted Stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Title of Individual [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Title of Individual [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Class of Warrant or Right, Exercise Price of Warrants or Rights </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Warrant exercise per share </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NonVestedRestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Non Vested Restricted Stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NonVestedRestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Non Vested Restricted Stock [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NonVestedRestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unvested Restricted Common Stock </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NonVestedRestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Non Vested Restricted Stock [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Class of Warrant or Right [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unrecognized compensation costs related to unvested restricted stock outstanding </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted Average Grant Date Fair Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Earnings Per Share [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Net Loss per Share </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Address, Address Line One </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Cash and Cash Equivalents, Fair Value Disclosure </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash equivalents </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Antidilutive Securities [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Antidilutive Securities [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AugustSevenTwoThousandTwentyThreeToTermLoanMaturityDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> August seven two thousand twenty three to term loan maturity date. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AugustSevenTwoThousandTwentyThreeToTermLoanMaturityDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> August Seven Two Thousand Twenty Three To term Loan Maturity Date [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AugustSevenTwoThousandTwentyThreeToTermLoanMaturityDateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Between August 7, 2023 and Term Loan Maturity Date [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restricted cash related to the Company's debt agreement </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Restricted cash </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Restricted Cash </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCash_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Restricted Cash, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingencyNameOfPlaintiff_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Name of Plaintiff </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LossContingencyNameOfPlaintiff_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Loss Contingency, Name of Plaintiff </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Event Type [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Risk-free interest rate, Minimum </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Income Statement Location [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income Statement Location [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Risk-free interest rate, Maximum </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Fair Value Assumptions Risk Free Interest Rate Maximum </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PerformanceBasedPaymentsMemberMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Performance Based Payments Member [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Expected dividend yield </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Fair Value Assumptions Expected Dividend Rate </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_OperatingLeaseArea_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Operating lease area. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_OperatingLeaseArea_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Operating Lease Area </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Line of Credit Facility, Lender [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LicenseAgreementWithPgenTherapeuticsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> License agreement with PGEN therapeutics. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LicenseAgreementWithPgenTherapeuticsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> License Agreement With PGEN Therapeutics [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InvoicePaymentSettlementAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Outstanding invoice amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InvoicePaymentSettlementAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Invoice Payment Settlement Amount </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InvoicePaymentSettlementAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Invoice payment settlement amount. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LicenseAgreementWithTheNationalCancerInstituteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> License Agreement with the National Cancer Institute [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_TwoThousandTwelveStockOptionPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Two Thousand Twelve Stock Option Plan [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share Price </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> par value per share </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AgreementTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Agreement Type [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Long-Term Debt, Gross </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Total debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Product and Service [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CARProductsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> CAR Products [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Title of 12(b) Security </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioPreviouslyReportedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Previously Reported [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioPreviouslyReportedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Previously Reported </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AggregateMinimumAnnualRoyaltiesPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Aggregate minimum annual royalties paid. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AggregateMinimumAnnualRoyaltiesPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Aggregate Minimum Annual Royalties Paid </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AggregateMinimumAnnualRoyaltiesPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Aggregate minimum annual royalties paid </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LeaseTerminationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Lease termination date. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LeaseTerminationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Lease Termination Date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LeaseTerminationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Lease termination date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrimeRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Prime Rate [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrimeRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Prime Rate [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSubsidiaryOrEquityMethodInvesteeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule of Subsidiary or Equity Method Investee [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Accounting Standards Update [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PostMarketingApprovalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Post Marketing Approval [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Prepaid Expenses and Other Current Assets [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Prepaid Expenses and Other Current Assets </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Net Cash Provided by (Used in) Investing Activities [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash flows from investing activities: </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Amortization of Debt Issuance Costs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amortization of financing costs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AugustSevenTwoThousandTwentyTwoToAugustSixTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> August seven two thousand twenty two to august six two thousand twenty three. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AugustSevenTwoThousandTwentyTwoToAugustSixTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> August Seven Two Thousand Twenty Two to August Six Two Thousand Twenty Three [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AugustSevenTwoThousandTwentyTwoToAugustSixTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Between August 7, 2022 and August 6, 2023 [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Long-Lived Tangible Asset [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Event [Table] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InitialBenchmarkPaymentDue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> First benchmark payment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InitialBenchmarkPaymentDue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Initial Benchmark Payment Due </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InitialBenchmarkPaymentDue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> The first benchmark payment due upon the initiation of the Company's first sponsored phase. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds from Issuance of Long-Term Debt and Capital Securities, Net </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Gross proceeds from debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Proceeds from Issuance of Long-term Debt and Capital Securities, Net, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_HoustonTexasMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Houston Texas [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_HoustonTexasMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Houston Texas [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_HoustonTexasMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Houston, TX </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Interest Expense, Debt </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Interest expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Interest Expense, Debt, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LicenseAgreementCommencingDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> License agreement commencing date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LicenseAgreementCommencingDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> License Agreement Commencing Date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LicenseAgreementCommencingDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> License agreement commencing date. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Options exercisable, at end of period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AdditionalNumberOfWarrantsIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Additional number of warrants issued. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AdditionalNumberOfWarrantsIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Additional Number Of Warrants Issued </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_AdditionalNumberOfWarrantsIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional number warrants issued </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock, Shares, Outstanding </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Common Stock, Shares, Outstanding, Ending Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Common Stock, Shares, Outstanding, Beginning Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock, shares outstanding </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Risk-free interest rate </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cancelled </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LaboratoryEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Laboratory Equipment [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LaboratoryEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Laboratory Equipment [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LaboratoryEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Laboratory equipment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Income Statement Location [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income Statement Location [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Granted </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LicenseAgreementTermsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> License Agreement Terms [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Document Type </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IncreaseDecreaseInLeaseLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> The increase (decrease) during the period in the carrying value of lease liabilities reported as liabilities. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IncreaseDecreaseInLeaseLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Lease Liabilities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_IncreaseDecreaseInLeaseLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Lease liabilities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CommitmentsAndContingenciesDisclosureLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Commitments and Contingencies Disclosure [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CommitmentsAndContingenciesDisclosureLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Commitments and Contingencies Disclosure [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CommitmentsAndContingenciesDisclosureLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Accrued Payments </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SubleaseTermCommencedEndDateAmendment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Sublease term commenced end date amendment. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SubleaseTermCommencedEndDateAmendment_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Sublease Term Commenced End Date Amendment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_SubleaseTermCommencedEndDateAmendment_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Sublease term amendment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Line of Credit Facility, Current Borrowing Capacity </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Loan and Security Agreement </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockCallOrExerciseFeatures_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock, Call or Exercise Features </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockCallOrExerciseFeatures_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Exercise price </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Net Cash Provided by (Used in) Investing Activities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net cash used in investing activities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentQuarterlyReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Document Quarterly Report </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ReversalOfAccruedExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reversal of accrued expenses. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ReversalOfAccruedExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Reversal Of Accrued Expenses </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ReversalOfAccruedExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reversal of accrued expenses </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net loss applicable to common stockholders </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Net Income (Loss) Available to Common Stockholders, Basic </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net Income (Loss) Available to Common Stockholders, Basic, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cancelled </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Cancelled </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Net Cash Provided by (Used in) Financing Activities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net cash used in financing activities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_QuarterlyExpenseIncurred_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Quarterly expense incurred </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_QuarterlyExpenseIncurred_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Quarterly Expense Incurred </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_QuarterlyExpenseIncurred_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Quarterly expense incurred. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Redemption, Period [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Filer Category </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Method Investments and Joint Ventures Disclosure [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Joint Venture </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Balance Sheet Location [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Balance Sheet Location [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Other non-current assets </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Increase (Decrease) in Other Noncurrent Assets </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Increase (Decrease) in Accrued Liabilities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued expenses </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Increase (Decrease) in Accrued Liabilities, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MinimumSalesRevenueOnWhichBenchmarkPaymentsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Minimum sales revenue on which benchmark payments payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MinimumSalesRevenueOnWhichBenchmarkPaymentsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Minimum Sales Revenue On Which Benchmark Payments Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MinimumSalesRevenueOnWhichBenchmarkPaymentsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Minimum sales revenue on which benchmark payments payable. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InterestExpenseAmortizedDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Interest expense amortized date. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InterestExpenseAmortizedDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Interest Expense Amortized Date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_InterestExpenseAmortizedDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Interest expense amortized date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Variable Rate [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_DueDateAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Due date [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Nonoperating Income (Expense) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Other income (expense), net </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other income (expense), net </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt Instrument Redemption Period Three Member </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Redemption, Period Three [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CapitalExpendituresIncurredButNotYetPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amounts included in accounts payable and accrued expenses related to property and equipment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CapitalExpendituresIncurredButNotYetPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Capital Expenditures Incurred but Not yet Paid </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Liabilities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total liabilities </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentDescriptionOfVariableRateBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Description of Variable Rate Basis </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentDescriptionOfVariableRateBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument description of variable rate basis </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Property and equipment right-of-use asset impairment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Asset Impairment Charges </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Asset Impairment Charges, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Equity, Attributable to Parent </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total stockholders' equity </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PaymentForHistoricalCostsOfTheLicensedPrograms_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Payment for historical costs of the licensed programs. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PaymentForHistoricalCostsOfTheLicensedPrograms_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Payment for Historical Costs of the Licensed Programs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PaymentForHistoricalCostsOfTheLicensedPrograms_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Payment for historical costs of the licensed programs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Consolidated Entities [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net Income (Loss) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Net Income (Loss) </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net loss </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Net loss </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Interest Expense, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Interest Expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Interest Expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Organization </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Business Description and Basis of Presentation [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Business </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NumberOfAdditionalOptionAvailableToTheUnderwriterToPurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of additional option available to the underwriter to purchase. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NumberOfAdditionalOptionAvailableToTheUnderwriterToPurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Additional Option Available To The Underwriter To Purchase </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_NumberOfAdditionalOptionAvailableToTheUnderwriterToPurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of additional option available to the underwriter to purchase </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Statement of Financial Position [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Weighted Average Number of Shares Outstanding, Diluted, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Weighted Average Number of Shares Outstanding, Diluted </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted Average Number Of Diluted Shares Outstanding </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Increase (Decrease) in Operating Liabilities [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Increase (decrease) in: </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WarrantsExpirationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Warrants expiration date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WarrantsExpirationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Warrants Expiration Date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WarrantsExpirationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Warrants Expiration Date </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_BlackScholesModelMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Black-Scholes Model [Member]. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_BlackScholesModelMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Black Scholes Model [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_BlackScholesModelMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Black-Scholes Model [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Increase (Decrease) in Receivables </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Increase (Decrease) in Receivables, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Receivables </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Credit Facility [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIncomeAndExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Other Income and Expenses [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIncomeAndExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other income (expense): </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel12And3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel12And3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value, Inputs, Level 2, and Level 3 [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfOriginalPrincipalDueAsAFinalPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of original principal due as a final payment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfOriginalPrincipalDueAsAFinalPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Percentage of Original Principal Due as a Final Payment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PercentageOfOriginalPrincipalDueAsAFinalPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Percentage of original principal due as a final payment. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Use of Estimates </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Use of Estimates, Policy [Policy Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDebtExtinguishmentCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Debt extinguishment costs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDebtExtinguishmentCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt extinguishment costs </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDebtExtinguishmentCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Payment for Debt Extinguishment or Debt Prepayment Cost </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Ending Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Beginning Balance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PlacementAgentFeesAndOtherRelatedExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Placement agent fees and other related expenses. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PlacementAgentFeesAndOtherRelatedExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Placement Agent Fees And Other Related Expenses </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_PlacementAgentFeesAndOtherRelatedExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Placement agent fees and other expenses </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaximumSalesRevenueOnWhichBenchmarkPaymentsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Maximum Sales Revenue On Which Benchmark Payments Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_MaximumSalesRevenueOnWhichBenchmarkPaymentsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Maximum Sales Revenue On Which Benchmark Payments Payable </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseholdImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Leasehold Improvements </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseholdImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Leasehold Improvements [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CRADAAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> CRADA Agreement </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_CRADAAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> CRADA Agreement [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReceivablesNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Receivables, Net, Current </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReceivablesNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Receivables </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReceivablesNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Receivables, Net, Current, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Disclosures [Abstract] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt Instrument Redemption Period One </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPeriodOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument, Redemption, Period One [Member] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WarrantTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Warrants </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WarrantTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> The entire disclosure pertaining to the warrant. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_WarrantTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Warrant [Text Block] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Hierarchy and NAV [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value, Hierarchy [Axis] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Measurement Frequency [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value, Measurement Frequency [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Payments to Acquire Property, Plant, and Equipment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Payments to Acquire Property, Plant, and Equipment, Total </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Purchases of property and equipment </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ClassOfWarrantOrRightDomainDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Class Of Warrant Or Right. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_ClassOfWarrantOrRightDomainDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Class Of Warrant Or Right Domain [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RestatementDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Revision of Prior Period [Domain] </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LicenseExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> License Expense </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="tcrt_LicenseExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation"> Amount of expense related to License payments. </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Vested </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Vested </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Issued During Period, Shares, New Issues </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock issuance </link:label>
<link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfWarrantOrRightAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label"> Class of Warrant or Right [Axis] </link:label>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tcrt_AdditionalLoansCommitted" xlink:to="tcrt_AdditionalLoansCommitted_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:to="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentTransitionReport" xlink:to="dei_DocumentTransitionReport_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tcrt_MilestonePayment" xlink:to="tcrt_MilestonePayment_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestructuringCostAndReserveLineItems" xlink:to="us-gaap_RestructuringCostAndReserveLineItems_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tcrt_AnnualLicenseFees" xlink:to="tcrt_AnnualLicenseFees_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_StatementGeographicalAxis_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tcrt_TwoThousandAndTwentyEquityIncentivePlanMember" xlink:to="tcrt_TwoThousandAndTwentyEquityIncentivePlanMember_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="us-gaap_OtherLiabilitiesNoncurrent_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:to="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tcrt_FullyDrawnAmount" xlink:to="tcrt_FullyDrawnAmount_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel1Member" xlink:to="us-gaap_FairValueInputsLevel1Member_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tcrt_EquityAndTermBMilestoneMember" xlink:to="tcrt_EquityAndTermBMilestoneMember_lbl"/>
<link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:to="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl"/>
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1 Subsequent Filing that References this Filing

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

 4/01/24  Alaunos Therapeutics, Inc.        10-K       12/31/23   76:9.9M                                   Donnelley … Solutions/FA

2 Previous Filings that this Filing References

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

 8/14/23  Alaunos Therapeutics, Inc.        10-Q        6/30/23   56:6.9M                                   Donnelley … Solutions/FA
 9/22/20  Alaunos Therapeutics, Inc.        8-K:5,9     9/18/20   12:258K                                   Donnelley … Solutions/FA
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