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  <xsd:element abstract="true" id="xage_PuritanPartnersLlcMember" name="PuritanPartnersLlcMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_PuritanPartnersMember" name="PuritanPartnersMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="xage_RelatedPartyTransactionsPolicyTextBlock" name="RelatedPartyTransactionsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="xage_RevenueThresholdForOnetimePayment" name="RevenueThresholdForOnetimePayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_SeniorSecuredConvertibleNotesMember" name="SeniorSecuredConvertibleNotesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_SeriesAConvertiblePreferredStockMember" name="SeriesAConvertiblePreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="xage_SettlementLiabilitiesPrior" name="SettlementLiabilitiesPrior" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="xage_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodIntrinsicValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="xage_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodIntrinsicValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="xage_SubsequentEventDebtAmount" name="SubsequentEventDebtAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_The2009StockIncentivePlanMember" name="The2009StockIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_The2023LongtermIncentivePlanMember" name="The2023LongtermIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="xage_WarrantAndOptionValuationPolicyTextBlock" name="WarrantAndOptionValuationPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="xage_WarrantsAndRightsExercisableTerm" name="WarrantsAndRightsExercisableTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="xage_WarrantsMember" name="WarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="xage_WarrantsPolicyTextBlock" name="WarrantsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType" xbrli:periodType="duration"/>
  <xsd:element id="xage_WorkingCapitalDeficit" name="WorkingCapitalDeficit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="xage_YuvaLicenseAgreementMember" name="YuvaLicenseAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-11-stockholders-equity-deficit-schedule-of-sharebased-compensation-details" name="statement-statement-note-11-stockholders-equity-deficit-schedule-of-sharebased-compensation-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-11-stockholders-equity-deficit-schedule-of-warrants-details" name="statement-statement-note-11-stockholders-equity-deficit-schedule-of-warrants-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-11-stockholders-equity-deficit-tables" name="statement-statement-note-11-stockholders-equity-deficit-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-2-summary-of-significant-accounting-policies-changes-in-the-fair-value-details" name="statement-statement-note-2-summary-of-significant-accounting-policies-changes-in-the-fair-value-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-2-summary-of-significant-accounting-policies-fair-value-valuation-assumption-details" name="statement-statement-note-2-summary-of-significant-accounting-policies-fair-value-valuation-assumption-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-2-summary-of-significant-accounting-policies-potentially-dilutive-securities-details" name="statement-statement-note-2-summary-of-significant-accounting-policies-potentially-dilutive-securities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-2-summary-of-significant-accounting-policies-summary-of-fair-value-by-balance-sheet-grouping-details" name="statement-statement-note-2-summary-of-significant-accounting-policies-summary-of-fair-value-by-balance-sheet-grouping-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-2-summary-of-significant-accounting-policies-tables" name="statement-statement-note-2-summary-of-significant-accounting-policies-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-4-asset-acquisition-pro-form-information-details" name="statement-statement-note-4-asset-acquisition-pro-form-information-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-4-asset-acquisition-schedule-of-assumed-assets-and-liabilities-details" name="statement-statement-note-4-asset-acquisition-schedule-of-assumed-assets-and-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-4-asset-acquisition-schedule-of-consideration-transferred-details" name="statement-statement-note-4-asset-acquisition-schedule-of-consideration-transferred-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-4-asset-acquisition-schedule-of-consideration-transferred-details-parentheticals" name="statement-statement-note-4-asset-acquisition-schedule-of-consideration-transferred-details-parentheticals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-4-asset-acquisition-tables" name="statement-statement-note-4-asset-acquisition-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-5-inventory-schedule-of-inventory-details" name="statement-statement-note-5-inventory-schedule-of-inventory-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-5-inventory-tables" name="statement-statement-note-5-inventory-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-6-property-and-equipment-schedule-of-property-plant-and-equipment-details" name="statement-statement-note-6-property-and-equipment-schedule-of-property-plant-and-equipment-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-6-property-and-equipment-tables" name="statement-statement-note-6-property-and-equipment-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-7-accrued-expenses-and-other-liabilities-schedule-of-accrued-expenses-and-other-liabilities-details" name="statement-statement-note-7-accrued-expenses-and-other-liabilities-schedule-of-accrued-expenses-and-other-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-note-7-accrued-expenses-and-other-liabilities-tables" name="statement-statement-note-7-accrued-expenses-and-other-liabilities-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="xage_statement-statement-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
