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  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019be110-edf4-7c0b-9dda-bc7fd4ad4173_totalLabel_fr" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Flux de trésorerie liés aux activités opérationnelles avant impôt et variation du besoin en fonds de roulement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital"/>
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    <link:label id="lab_ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment_019be110-edf4-712c-9722-f19486547155_verboseLabel_fr" xlink:label="lab_ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="fr">Perte sur cession</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" xlink:to="lab_ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" xlink:type="arc" order="1"/>
    <link:label id="lab_nbx_CurrentAssetsOther_label_fr" xlink:label="lab_nbx_CurrentAssetsOther" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Autres actifs courants</link:label>
    <link:label id="lab_nbx_CurrentAssetsOther_documentation_fr" xlink:label="lab_nbx_CurrentAssetsOther" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Current Assets, Other</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_nbx_CurrentAssetsOther" xlink:href="nbx-2025-12-31.xsd#nbx_CurrentAssetsOther"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_nbx_CurrentAssetsOther" xlink:to="lab_nbx_CurrentAssetsOther" xlink:type="arc" order="1"/>
    <link:label id="lab_nbx_NonCurrentLiabilitiesExcludingRefundLiabilities_label_fr" xlink:label="lab_nbx_NonCurrentLiabilitiesExcludingRefundLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Dettes financières - part non courante</link:label>
    <link:label id="lab_nbx_NonCurrentLiabilitiesExcludingRefundLiabilities_documentation_fr" xlink:label="lab_nbx_NonCurrentLiabilitiesExcludingRefundLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Non Current Liabilities Excluding Refund Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_nbx_NonCurrentLiabilitiesExcludingRefundLiabilities" xlink:href="nbx-2025-12-31.xsd#nbx_NonCurrentLiabilitiesExcludingRefundLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_nbx_NonCurrentLiabilitiesExcludingRefundLiabilities" xlink:to="lab_nbx_NonCurrentLiabilitiesExcludingRefundLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_nbx_CurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities_label_fr" xlink:label="lab_nbx_CurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Partie Courante Des Emprunts Non Courants Et Des Dettes De Location Courantes</link:label>
    <link:label id="lab_nbx_CurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities_documentation_fr" xlink:label="lab_nbx_CurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Current Portion Of Non Current Borrowings And Current Lease Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_nbx_CurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities" xlink:href="nbx-2025-12-31.xsd#nbx_CurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_nbx_CurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities" xlink:to="lab_nbx_CurrentPortionOfNonCurrentBorrowingsAndCurrentLeaseLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_nbx_RefundLiabilityNonCurrent_label_fr" xlink:label="lab_nbx_RefundLiabilityNonCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Passif De Remboursement - Part Non Courante</link:label>
    <link:label id="lab_nbx_RefundLiabilityNonCurrent_documentation_fr" xlink:label="lab_nbx_RefundLiabilityNonCurrent" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Refund Liability, Non-Current</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_nbx_RefundLiabilityNonCurrent" xlink:href="nbx-2025-12-31.xsd#nbx_RefundLiabilityNonCurrent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_nbx_RefundLiabilityNonCurrent" xlink:to="lab_nbx_RefundLiabilityNonCurrent" xlink:type="arc" order="1"/>
    <link:label id="lab_nbx_AdjustmentsForDecreaseIncreaseInOtherReceivables_label_fr" xlink:label="lab_nbx_AdjustmentsForDecreaseIncreaseInOtherReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Augmentation (Diminution) Des Autres créances</link:label>
    <link:label id="lab_nbx_AdjustmentsForDecreaseIncreaseInOtherReceivables_documentation_fr" xlink:label="lab_nbx_AdjustmentsForDecreaseIncreaseInOtherReceivables" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Adjustments For Decrease (Increase) In Other Receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_nbx_AdjustmentsForDecreaseIncreaseInOtherReceivables" xlink:href="nbx-2025-12-31.xsd#nbx_AdjustmentsForDecreaseIncreaseInOtherReceivables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_nbx_AdjustmentsForDecreaseIncreaseInOtherReceivables" xlink:to="lab_nbx_AdjustmentsForDecreaseIncreaseInOtherReceivables" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_019be110-edf4-7b13-892e-e971b9209812_totalLabel_fr" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Flux net de trésorerie liés aux activités de financement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets_019d1c8f-b10d-7ddb-aa5f-d4c30b191d06_verboseLabel_fr" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="fr">Immobilisations corporelles, y compris les actifs liés au droit d’utilisation</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:to="lab_ifrs-full_PropertyPlantAndEquipmentIncludingRightofuseAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_nbx_OtherCurrentLiabilitiesIncludingSocialSecurityPayablesandTaxesotherthanIncomeTax_label_fr" xlink:label="lab_nbx_OtherCurrentLiabilitiesIncludingSocialSecurityPayablesandTaxesotherthanIncomeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Autres Passifs Courants, Y Compris Les Dettes Sociales Et Les Taxes Autres Que L'impôt Sur Le Revenu</link:label>
    <link:label id="lab_nbx_OtherCurrentLiabilitiesIncludingSocialSecurityPayablesandTaxesotherthanIncomeTax_documentation_fr" xlink:label="lab_nbx_OtherCurrentLiabilitiesIncludingSocialSecurityPayablesandTaxesotherthanIncomeTax" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Other Current Liabilities Including Social Security Payables and Taxes other than Income Tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_nbx_OtherCurrentLiabilitiesIncludingSocialSecurityPayablesandTaxesotherthanIncomeTax" xlink:href="nbx-2025-12-31.xsd#nbx_OtherCurrentLiabilitiesIncludingSocialSecurityPayablesandTaxesotherthanIncomeTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_nbx_OtherCurrentLiabilitiesIncludingSocialSecurityPayablesandTaxesotherthanIncomeTax" xlink:to="lab_nbx_OtherCurrentLiabilitiesIncludingSocialSecurityPayablesandTaxesotherthanIncomeTax" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities_019be110-edf4-7a9a-ab19-58362918fca3_totalLabel_fr" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Flux nets de trésorerie liés aux activités d'investissement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_nbx_RefundLiabilitiesCurrent_label_fr" xlink:label="lab_nbx_RefundLiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Passif de remboursement - part courante</link:label>
    <link:label id="lab_nbx_RefundLiabilitiesCurrent_documentation_fr" xlink:label="lab_nbx_RefundLiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Refund Liabilities, Current</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_nbx_RefundLiabilitiesCurrent" xlink:href="nbx-2025-12-31.xsd#nbx_RefundLiabilitiesCurrent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_nbx_RefundLiabilitiesCurrent" xlink:to="lab_nbx_RefundLiabilitiesCurrent" xlink:type="arc" order="1"/>
    <link:label id="lab_nbx_IncreaseDecreaseInRefundLiability_label_fr" xlink:label="lab_nbx_IncreaseDecreaseInRefundLiability" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Passifs de remboursement</link:label>
    <link:label id="lab_nbx_IncreaseDecreaseInRefundLiability_documentation_fr" xlink:label="lab_nbx_IncreaseDecreaseInRefundLiability" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Augmentation (diminution) de la responsabilité de remboursement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_nbx_IncreaseDecreaseInRefundLiability" xlink:href="nbx-2025-12-31.xsd#nbx_IncreaseDecreaseInRefundLiability"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_nbx_IncreaseDecreaseInRefundLiability" xlink:to="lab_nbx_IncreaseDecreaseInRefundLiability" xlink:type="arc" order="1"/>
    <link:label id="lab_nbx_CashFlowFromOperatingActivitiesAfterTaxAndBeforeChangeInWorkingCapitalRequirement_019be110-edf4-7c8f-9387-6e010db55cd6_totalLabel_fr" xlink:label="lab_nbx_CashFlowFromOperatingActivitiesAfterTaxAndBeforeChangeInWorkingCapitalRequirement" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Flux de trésorerie liés aux activités opérationnelles après impôt et avant variation du besoin en fonds de roulement</link:label>
    <link:label id="lab_nbx_CashFlowFromOperatingActivitiesAfterTaxAndBeforeChangeInWorkingCapitalRequirement_label_fr" xlink:label="lab_nbx_CashFlowFromOperatingActivitiesAfterTaxAndBeforeChangeInWorkingCapitalRequirement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Cash Flow From Operating Activities After Tax And Before Change In Working Capital Requirement</link:label>
    <link:label id="lab_nbx_CashFlowFromOperatingActivitiesAfterTaxAndBeforeChangeInWorkingCapitalRequirement_documentation_fr" xlink:label="lab_nbx_CashFlowFromOperatingActivitiesAfterTaxAndBeforeChangeInWorkingCapitalRequirement" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Cash Flow From Operating Activities After Tax And Before Change In Working Capital Requirement</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_nbx_CashFlowFromOperatingActivitiesAfterTaxAndBeforeChangeInWorkingCapitalRequirement" xlink:href="nbx-2025-12-31.xsd#nbx_CashFlowFromOperatingActivitiesAfterTaxAndBeforeChangeInWorkingCapitalRequirement"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_nbx_CashFlowFromOperatingActivitiesAfterTaxAndBeforeChangeInWorkingCapitalRequirement" xlink:to="lab_nbx_CashFlowFromOperatingActivitiesAfterTaxAndBeforeChangeInWorkingCapitalRequirement" xlink:type="arc" order="1"/>
    <link:label id="lab_nbx_AdjustmentsForDecreaseIncreaseInReceivablesFromTaxesOtherThanIncomeTax_label_fr" xlink:label="lab_nbx_AdjustmentsForDecreaseIncreaseInReceivablesFromTaxesOtherThanIncomeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Augmentation ( Diminution) Des Créances Fiscales Autres Que L'Impôt Sur Le Revenu</link:label>
    <link:label id="lab_nbx_AdjustmentsForDecreaseIncreaseInReceivablesFromTaxesOtherThanIncomeTax_documentation_fr" xlink:label="lab_nbx_AdjustmentsForDecreaseIncreaseInReceivablesFromTaxesOtherThanIncomeTax" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Augmentation ( Diminution) Des Créances Fiscales Autres Que L'Impôt Sur Le Revenu</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_nbx_AdjustmentsForDecreaseIncreaseInReceivablesFromTaxesOtherThanIncomeTax" xlink:href="nbx-2025-12-31.xsd#nbx_AdjustmentsForDecreaseIncreaseInReceivablesFromTaxesOtherThanIncomeTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_nbx_AdjustmentsForDecreaseIncreaseInReceivablesFromTaxesOtherThanIncomeTax" xlink:to="lab_nbx_AdjustmentsForDecreaseIncreaseInReceivablesFromTaxesOtherThanIncomeTax" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_019be110-edf4-776a-ba42-2412bd8c2d05_totalLabel_fr" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Flux nets de trésorerie liés aux activités opérationnelles</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_nbx_OperatingRevenues_019be110-edf4-7a86-ae9d-85a5c08e3c72_totalLabel_fr" xlink:label="lab_nbx_OperatingRevenues" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Total des produits d’exploitation</link:label>
    <link:label id="lab_nbx_OperatingRevenues_label_fr" xlink:label="lab_nbx_OperatingRevenues" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Operating Revenues</link:label>
    <link:label id="lab_nbx_OperatingRevenues_documentation_fr" xlink:label="lab_nbx_OperatingRevenues" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Operating Revenues</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_nbx_OperatingRevenues" xlink:href="nbx-2025-12-31.xsd#nbx_OperatingRevenues"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_nbx_OperatingRevenues" xlink:to="lab_nbx_OperatingRevenues" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OperatingExpense_019be110-edf4-76ca-a57a-82e6db7cdd87_totalLabel_fr" xlink:label="lab_ifrs-full_OperatingExpense" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Total des charges opérationnelles</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OperatingExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_OperatingExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OperatingExpense" xlink:to="lab_ifrs-full_OperatingExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinanceIncomeCost_019be110-edf4-758d-afc9-06398322dfea_totalLabel_fr" xlink:label="lab_ifrs-full_FinanceIncomeCost" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="fr">Résultat financier</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceIncomeCost" xlink:href="https://xbrl.ifrs.org/taxonomy/2024-03-27/full_ifrs/full_ifrs-cor_2024-03-27.xsd#ifrs-full_FinanceIncomeCost"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinanceIncomeCost" xlink:to="lab_ifrs-full_FinanceIncomeCost" xlink:type="arc" order="1"/>
    <link:label id="lab_nbx_CostOfNetFinancialDebt_label_fr" xlink:label="lab_nbx_CostOfNetFinancialDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="fr">Coût De L'endettement Financier Net</link:label>
    <link:label id="lab_nbx_CostOfNetFinancialDebt_documentation_fr" xlink:label="lab_nbx_CostOfNetFinancialDebt" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="fr">Cost of Net Financial Debt</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_nbx_CostOfNetFinancialDebt" xlink:href="nbx-2025-12-31.xsd#nbx_CostOfNetFinancialDebt"/>
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