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  <xs:element id="nbx_IncreaseDecreaseInNumberOfEmployees" abstract="false" name="IncreaseDecreaseInNumberOfEmployees" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="nbx_SellingGeneralAndAdministrativeExpensePurchasesFeesAndOtherExpense" abstract="false" name="SellingGeneralAndAdministrativeExpensePurchasesFeesAndOtherExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_SellingGeneralAndAdministrativeExpensePayrollCosts" abstract="false" name="SellingGeneralAndAdministrativeExpensePayrollCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="nbx_IncreaseDecreaseInPurchasesFeesAndOtherExpenses" abstract="false" name="IncreaseDecreaseInPurchasesFeesAndOtherExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_PercentageIncreaseDecreaseInRentFeesAndOtherExpenses" abstract="false" name="PercentageIncreaseDecreaseInRentFeesAndOtherExpenses" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
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  <xs:element id="nbx_LegalFeesAndExpenses" abstract="false" name="LegalFeesAndExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_SponsorshipTransitionPayrollExpense" abstract="false" name="SponsorshipTransitionPayrollExpense" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_HigherBonusPayrollExpense" abstract="false" name="HigherBonusPayrollExpense" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="nbx_SocialChargesRelatedToStockOptions" abstract="false" name="SocialChargesRelatedToStockOptions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_IncreaseDecreaseInBonusPayments" abstract="false" name="IncreaseDecreaseInBonusPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_PaymentOfBonuses" abstract="false" name="PaymentOfBonuses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_DecreaseInEmployeeRelatedExpenseDueToCompanyRealignment" abstract="false" name="DecreaseInEmployeeRelatedExpenseDueToCompanyRealignment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="nbx_DepreciationAmortizationAndProvisionExpensesExcludingIAS19" abstract="false" name="DepreciationAmortizationAndProvisionExpensesExcludingIAS19" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_ProvisionForRetirementBenefitObligations" abstract="false" name="ProvisionForRetirementBenefitObligations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="nbx_DepreciationAmortizationAndProvisionExpenses" abstract="false" name="DepreciationAmortizationAndProvisionExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="nbx_ContractTerminationIndemnities" abstract="false" name="ContractTerminationIndemnities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOtherEquityInstrumentsOutstandingTable" abstract="true" name="DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOtherEquityInstrumentsOutstandingTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
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  <xs:element id="nbx_BSPCE2017OrdinaryMember" abstract="true" name="BSPCE2017OrdinaryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_BSPCE2017PerformanceMember" abstract="true" name="BSPCE2017PerformanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOtherEquityInstrumentsOutstandingLineItems" abstract="true" name="DisclosureOfNumberAndWeightedAverageRemainingContractualLifeOfOtherEquityInstrumentsOutstandingLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="nbx_NumberOfAwardsExercisedInShareBasedPaymentArrangement" abstract="false" name="NumberOfAwardsExercisedInShareBasedPaymentArrangement" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="nbx_NumberOfAwardsForfeitedInShareBasedPaymentArrangement" abstract="false" name="NumberOfAwardsForfeitedInShareBasedPaymentArrangement" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="nbx_OSA20161PerformanceMember" abstract="true" name="OSA20161PerformanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA2017OrdinaryMember" abstract="true" name="OSA2017OrdinaryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA202104PMember" abstract="true" name="OSA202104PMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA202106PMember" abstract="true" name="OSA202106PMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA202206PMember" abstract="true" name="OSA202206PMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA202301OrdinaryMember" abstract="true" name="OSA202301OrdinaryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA202401OrdinaryMember" abstract="true" name="OSA202401OrdinaryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA202104OrdinaryMember" abstract="true" name="OSA202104OrdinaryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_DisclosureOfDetailedInformationAboutShareBasedPaymentsTable" abstract="true" name="DisclosureOfDetailedInformationAboutShareBasedPaymentsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="nbx_DisclosureOfDetailedInformationAboutShareBasedPaymentsLineItems" abstract="true" name="DisclosureOfDetailedInformationAboutShareBasedPaymentsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="nbx_NumberOfPrecedingTradingDaysTakenIntoAccountInTheDeterminationOfTheSharePriceOnTheGrantDate" abstract="false" name="NumberOfPrecedingTradingDaysTakenIntoAccountInTheDeterminationOfTheSharePriceOnTheGrantDate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="nbx_BSPCE2017ProjectMember" abstract="true" name="BSPCE2017ProjectMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_AGA2020Member" abstract="true" name="AGA2020Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_Vesting1Axis" abstract="true" name="Vesting1Axis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="nbx_Vesting1Domain" abstract="true" name="Vesting1Domain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_TrancheFourMember" abstract="true" name="TrancheFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_WeightedAverageSharePriceOtherEquityInstrumentsGranted" abstract="false" name="WeightedAverageSharePriceOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="nbx_ExercisePriceOtherEquityInstrumentsGranted" abstract="false" name="ExercisePriceOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="nbx_ExpectedVolatilityOtherEquityInstrumentsGranted" abstract="false" name="ExpectedVolatilityOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="nbx_OptionLifeOtherEquityInstrumentsGranted" abstract="false" name="OptionLifeOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="nbx_RiskFreeInterestRateOtherEquityInstrumentsGranted" abstract="false" name="RiskFreeInterestRateOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="nbx_ExpectedDividendAsPercentageOtherEquityInstrumentsGranted" abstract="false" name="ExpectedDividendAsPercentageOtherEquityInstrumentsGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="nbx_ShareBasedCompensationArrangementByShareBasedPaymentAwardValueOfInitialPlan" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardValueOfInitialPlan" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_OSA20161OrdinaryMember" abstract="true" name="OSA20161OrdinaryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA2017PerformanceMember" abstract="true" name="OSA2017PerformanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA202104PerformanceMember" abstract="true" name="OSA202104PerformanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA202106OrdinaryMember" abstract="true" name="OSA202106OrdinaryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA202106PerformanceMember" abstract="true" name="OSA202106PerformanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA202206OMember" abstract="true" name="OSA202206OMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA202301OMember" abstract="true" name="OSA202301OMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OSA202401OMember" abstract="true" name="OSA202401OMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_DebtRestructuringValuationImpact" abstract="false" name="DebtRestructuringValuationImpact" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_IncreaseDecreaseOnFairValueVariation" abstract="false" name="IncreaseDecreaseOnFairValueVariation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_ChangeInCashAndCashEquivalentsAxis" abstract="true" name="ChangeInCashAndCashEquivalentsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="nbx_ChangeInCashAndCashEquivalentsDomain" abstract="true" name="ChangeInCashAndCashEquivalentsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_OptimizationOfCashMangementsMember" abstract="true" name="OptimizationOfCashMangementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_InterestCostOfRoyaltyFinancing" abstract="false" name="InterestCostOfRoyaltyFinancing" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_DeferredTaxRate" abstract="false" name="DeferredTaxRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="nbx_TaxEffectOfShareBasedPaymentArrangements" abstract="false" name="TaxEffectOfShareBasedPaymentArrangements" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_FinancialAgreementAxis" abstract="true" name="FinancialAgreementAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="nbx_FinancialAgreementDomain" abstract="true" name="FinancialAgreementDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_KeplerCheuvreuxSubscriptionAgreementPACEOMember" abstract="true" name="KeplerCheuvreuxSubscriptionAgreementPACEOMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_TerminationAgreementMember" abstract="true" name="TerminationAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_NBTXR3Member" abstract="true" name="NBTXR3Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="nbx_EIBLoanGuaranteeBySubsidiariesMinimumPercentageOfConsolidatedGrossRevenuesTotalAssetsOrEBITDA" abstract="false" name="EIBLoanGuaranteeBySubsidiariesMinimumPercentageOfConsolidatedGrossRevenuesTotalAssetsOrEBITDA" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="nbx_CashBalanceThresholdForMandatoryPIKInterestPayment" abstract="false" name="CashBalanceThresholdForMandatoryPIKInterestPayment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_NumberOfShortTermLeaseContracts" abstract="false" name="NumberOfShortTermLeaseContracts" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="nbx_AnnualShortTermLeaseExpense" abstract="false" name="AnnualShortTermLeaseExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_AnnualLeaseExpense" abstract="false" name="AnnualLeaseExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_UnderwritingAgreementMaximumNumberOfSharesIssued" abstract="false" name="UnderwritingAgreementMaximumNumberOfSharesIssued" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="nbx_UnderwritingAgreementMaximumPeriod" abstract="false" name="UnderwritingAgreementMaximumPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="nbx_UnderwritingAgreementIssuanceBasisMaximumDiscount" abstract="false" name="UnderwritingAgreementIssuanceBasisMaximumDiscount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="nbx_RoyaltyFinancingBondsHoldersPercentage" abstract="false" name="RoyaltyFinancingBondsHoldersPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="nbx_IncreaseInCommitmentPercentage" abstract="false" name="IncreaseInCommitmentPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="nbx_AggregateSubscriptionAssumingPrice" abstract="false" name="AggregateSubscriptionAssumingPrice" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_SubscriptionAssumingPriceFunded" abstract="false" name="SubscriptionAssumingPriceFunded" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_NetCollectionsPaymentsFromRelatedParty" abstract="false" name="NetCollectionsPaymentsFromRelatedParty" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nbx_NetAmountsReceivablePayableRelatedPartyTransactions" abstract="false" name="NetAmountsReceivablePayableRelatedPartyTransactions" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
