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	<link:linkbaseRef xlink:type="simple" xlink:href="cubt-20220630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Definition Links" />
      </appinfo>
    </annotation>
    <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
    <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
    <import namespace="http://xbrl.sec.gov/dei/2022" schemaLocation="https://xbrl.sec.gov/dei/2022/dei-2022.xsd" />
    <import namespace="http://fasb.org/us-gaap/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd" />
    <import namespace="http://fasb.org/us-gaap-sup/2022q3" schemaLocation="https://xbrl.fasb.org/us-gaap/2022q3/us-gaap-sup-2022q3.xsd" />
    <import namespace="http://fasb.org/srt-sup/2022q3" schemaLocation="https://xbrl.fasb.org/srt/2022q3/srt-sup-2022q3.xsd" />
    <import namespace="http://fasb.org/us-types/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-types-2022.xsd" />
    <import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd" />
    <import namespace="http://xbrl.sec.gov/country/2022" schemaLocation="https://xbrl.sec.gov/country/2022/country-2022.xsd" />
    <import namespace="http://fasb.org/srt/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd" />
    <import namespace="http://fasb.org/srt-types/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-types-2022.xsd" />
    <element id="CUBT_MidAtlanticBioTheraputicsIncMember" name="MidAtlanticBioTheraputicsIncMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_WebsiteMember" name="WebsiteMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_IEMIncMember" name="IEMIncMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_InvestigationalNewDrugMember" name="InvestigationalNewDrugMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_NationalInstituteOfHealthPatentLicenseOneMember" name="NationalInstituteOfHealthPatentLicenseOneMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_NationalInstituteOfHealthPatentLicenseTwoMember" name="NationalInstituteOfHealthPatentLicenseTwoMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_RoyaltyOneMember" name="RoyaltyOneMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_TwoNotesMember" name="TwoNotesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ThirteenNotesMember" name="ThirteenNotesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_TwoNotesPayableMember" name="TwoNotesPayableMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ThirteenNotesPayableMember" name="ThirteenNotesPayableMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_PromissoryNoteExchangeMember" name="PromissoryNoteExchangeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_DirectorsAndOfficersMember" name="DirectorsAndOfficersMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_TwelveMonthSeniorSecuredNoteMember" name="TwelveMonthSeniorSecuredNoteMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_BeginningInSeptemberTwoThousandAndTwentyTwoMember" name="BeginningInSeptemberTwoThousandAndTwentyTwoMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_MABTsCOVID19VaccineMember" name="MABTsCOVID19VaccineMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_AdvisoryBoardMember" name="AdvisoryBoardMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_BoardOfDirectorsMember" name="BoardOfDirectorsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_AdvisoryBoardOneMember" name="AdvisoryBoardOneMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_EmployeeMember" name="EmployeeMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_EmployeesMember" name="EmployeesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_TwoEmployeesMember" name="TwoEmployeesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ExchangeForServicesMember" name="ExchangeForServicesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_SeriesAConvertiblePreferredStockMember" name="SeriesAConvertiblePreferredStockMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_MidAtlanticBiTheraputicsIncMember" name="MidAtlanticBiTheraputicsIncMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_SeriesABCPreferredStockMember" name="SeriesABCPreferredStockMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_LegalServicesMember" name="LegalServicesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_WarrantsMember" name="WarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_TwoPeoplesMember" name="TwoPeoplesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ConvertibleSeniorSecuredNoteMember" name="ConvertibleSeniorSecuredNoteMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_BlackScholesMember" name="BlackScholesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_BoardOfAdvisoryMember" name="BoardOfAdvisoryMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ThreeEmployeesMember" name="ThreeEmployeesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ConvertibleSeniorSecuredNotePayableAndWarrantsMember" name="ConvertibleSeniorSecuredNotePayableAndWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_LenderMember" name="LenderMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_SubscriptionReceivable" name="SubscriptionReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_FundsReceivableOnNotesPayable" name="FundsReceivableOnNotesPayable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_LiabilityToIssueCommonShares" name="LiabilityToIssueCommonShares" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ShortTermBankLoansAndNotesPayableNetOfDiscount" name="ShortTermBankLoansAndNotesPayableNetOfDiscount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_Salaries" name="Salaries" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_EarningsPerSharesCombination" name="EarningsPerSharesCombination" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_WeightedAverageNumberOfSharesOutstandingCombination" name="WeightedAverageNumberOfSharesOutstandingCombination" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_AdjustmentsToAdditionalPaidInCapitalWarrantIssuedForServices" name="AdjustmentsToAdditionalPaidInCapitalWarrantIssuedForServices" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_PreferredStockIssuedDuringPeriodValueIssuedForService" name="PreferredStockIssuedDuringPeriodValueIssuedForService" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_PreferredStockIssuedDuringPeriodSharesIssuedForService" name="PreferredStockIssuedDuringPeriodSharesIssuedForService" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_PreferredStockIssuedDuringPeriodValueIssuedForServices" name="PreferredStockIssuedDuringPeriodValueIssuedForServices" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_PreferredStockIssuedDuringPeriodSharesIssuedForServices" name="PreferredStockIssuedDuringPeriodSharesIssuedForServices" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodValueConversionsOfConvertibleSecurities" name="StockIssuedDuringPeriodValueConversionsOfConvertibleSecurities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodSharesConversionsOfConvertibleSecurities" name="StockIssuedDuringPeriodSharesConversionsOfConvertibleSecurities" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodCommonSharesIssuedForCash" name="StockIssuedDuringPeriodCommonSharesIssuedForCash" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodSharesCommonSharesIssuedForCash" name="StockIssuedDuringPeriodSharesCommonSharesIssuedForCash" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodValueToConvertDebt" name="StockIssuedDuringPeriodValueToConvertDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodSharesToConvertDebt" name="StockIssuedDuringPeriodSharesToConvertDebt" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodValueWarrantExercised" name="StockIssuedDuringPeriodValueWarrantExercised" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodShareWarrantExercised" name="StockIssuedDuringPeriodShareWarrantExercised" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodValueToSettlePayables" name="StockIssuedDuringPeriodValueToSettlePayables" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodSharesToSettlePayables" name="StockIssuedDuringPeriodSharesToSettlePayables" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodValueToSettleDebt" name="StockIssuedDuringPeriodValueToSettleDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodSharesToSettleDebt" name="StockIssuedDuringPeriodSharesToSettleDebt" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodToSettleLiabilityToIssueShares" name="StockIssuedDuringPeriodToSettleLiabilityToIssueShares" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodSharesToSettleLiabilityToIssue" name="StockIssuedDuringPeriodSharesToSettleLiabilityToIssue" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_AdjustmentsToAdditionalPaidInCapitalWarrantIssuedWithNotesPayable" name="AdjustmentsToAdditionalPaidInCapitalWarrantIssuedWithNotesPayable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_AmortizationOfWarrantDiscount" name="AmortizationOfWarrantDiscount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_AmortizationOfDebtDiscount" name="AmortizationOfDebtDiscount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_WriteOffOfAbandonedAssets" name="WriteOffOfAbandonedAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_IncreaseDecreaseInStockSubscriptionReceivable" name="IncreaseDecreaseInStockSubscriptionReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_PaymentsOnRelatedPartyNotesPayable" name="PaymentsOnRelatedPartyNotesPayable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ProceedsFromRelatedPartyNotesPayable" name="ProceedsFromRelatedPartyNotesPayable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ProceedsFromThirdPartyNotesPayable" name="ProceedsFromThirdPartyNotesPayable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_NoncashOrPartNoncashCommonSharesIssuedForIntangibleAssets" name="NoncashOrPartNoncashCommonSharesIssuedForIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_CommonSharesIssuedUponConversionOfDebt" name="CommonSharesIssuedUponConversionOfDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_WarrantsIssuedAsDebtDiscount" name="WarrantsIssuedAsDebtDiscount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_SeriesCPreferredStockDeemedDividend" name="SeriesCPreferredStockDeemedDividend" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_DisclosureNotesPayableAbstract" name="DisclosureNotesPayableAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_NotesPayableTextBlock" name="NotesPayableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_DisclosureLiabilityToIssueCommonStockAbstract" name="DisclosureLiabilityToIssueCommonStockAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_LiabilityToIssueCommonStockDisclosureTextBlock" name="LiabilityToIssueCommonStockDisclosureTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_DisclosureWarrantsAbstract" name="DisclosureWarrantsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_WarrantsDisclosureTextBlock" name="WarrantsDisclosureTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_DisclosureEquityIncentivePlanAbstract" name="DisclosureEquityIncentivePlanAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_EquityIncentivePlanTextBlock" name="EquityIncentivePlanTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_DisclosureGeneralAndAdministrativeExpensesAbstract" name="DisclosureGeneralAndAdministrativeExpensesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_GeneralAndAdmininstrativeDisclosureTextBlock" name="GeneralAndAdmininstrativeDisclosureTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_PrepaidExpensesPolicyTextBlock" name="PrepaidExpensesPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_RelatedPartyTransactionsPolicyTextBlock" name="RelatedPartyTransactionsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_SummaryOfGeneralAndAdministrativeExpenseTableTextBlock" name="SummaryOfGeneralAndAdministrativeExpenseTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_WorkingCapital" name="WorkingCapital" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_CostOfOption" name="CostOfOption" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ProceedsForLicenseDevelopment" name="ProceedsForLicenseDevelopment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_IssuedAndOutstandingSharesPercentage" name="IssuedAndOutstandingSharesPercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_WarrantLoaned" name="WarrantLoaned" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_WarrantsMaturityPeriod" name="WarrantsMaturityPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_NumberOfCommonStockToSettleLiabilityToIssueShares" name="NumberOfCommonStockToSettleLiabilityToIssueShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_NumberOfCommonStockToSettlePayable" name="NumberOfCommonStockToSettlePayable" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ValueOfCommonStockToSettlePayable" name="ValueOfCommonStockToSettlePayable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ExerciseOfWarrantsForServicesShares" name="ExerciseOfWarrantsForServicesShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_DeemedDividend" name="DeemedDividend" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ClassOfWarrantOrRightNumberOfSecuritiesExchangeWarrantsOrRights" name="ClassOfWarrantOrRightNumberOfSecuritiesExchangeWarrantsOrRights" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_WarrantsToPurchaseOfCommonStockInExchangeForCash" name="WarrantsToPurchaseOfCommonStockInExchangeForCash" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodValueExchangeForServices" name="StockIssuedDuringPeriodValueExchangeForServices" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_WarrantsOutstanding" name="WarrantsOutstanding" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ExerciseOfWarrantsShares" name="ExerciseOfWarrantsShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_WarrantsDescription" name="WarrantsDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_StockIssuedDuringPeriodSharesExerciseOfWarrants" name="StockIssuedDuringPeriodSharesExerciseOfWarrants" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_OptionsPercentage" name="OptionsPercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_OptionsVestedPercentage" name="OptionsVestedPercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_ProfessionalFee" name="ProfessionalFee" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_IndefiniteLivedIntangibleAssetsWrittenOff" name="IndefiniteLivedIntangibleAssetsWrittenOff" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_EffectiveIncomeTaxRateReconciliationValuationAllowance" name="EffectiveIncomeTaxRateReconciliationValuationAllowance" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_MandatoryPrepaymentOfOriginalPrincipalAmount" name="MandatoryPrepaymentOfOriginalPrincipalAmount" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_PromissoryNoteMember" name="PromissoryNoteMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="CUBT_SeniorSecuredNotesMember" name="SeniorSecuredNotesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
</schema>
