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  <xsd:element id="meip_DilutiveSecuritiesEffectOnBasicEarningsPerShareChangeInFairValueOfWarrantLiability" name="DilutiveSecuritiesEffectOnBasicEarningsPerShareChangeInFairValueOfWarrantLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
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  <xsd:element id="meip_IncreaseDecreaseInOperatingLeaseLiabilitiesCurrent" name="IncreaseDecreaseInOperatingLeaseLiabilitiesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="meip_IncreaseDecreaseInUnbilledReceivable" name="IncreaseDecreaseInUnbilledReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="meip_PotentiallyDilutiveSecuritiesOutstandingLineItems" name="PotentiallyDilutiveSecuritiesOutstandingLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_EffectiveIncomeTaxRateReconciliationTaxExpensebenefitWarrantLiabilityPercentage" name="EffectiveIncomeTaxRateReconciliationTaxExpensebenefitWarrantLiabilityPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="meip_DeferredTaxAssetsRightOfUseAssets" name="DeferredTaxAssetsRightOfUseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="meip_ContractWithCustomerLiabilityMilestonePaymentReceived" name="ContractWithCustomerLiabilityMilestonePaymentReceived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="meip_AfterTaxReformMember" name="AfterTaxReformMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_PassThroughServicesMember" name="PassThroughServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_AccruedPreclinicalAndClinicalCosts" name="AccruedPreclinicalAndClinicalCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="meip_FurnitureAndEquipmentMember" name="FurnitureAndEquipmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_PotentialMilestonePaymentsPayable" name="PotentialMilestonePaymentsPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="meip_ExUsLicenseMember" name="ExUsLicenseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_UpfrontAndMilestonePayments" name="UpfrontAndMilestonePayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="meip_KkcAgreementsMember" name="KkcAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_CaresActMember" name="CaresActMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_StockIssuanceCosts" name="StockIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="meip_NumberOfClinicalStageCandidates" name="NumberOfClinicalStageCandidates" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="meip_SbioPurchaseAgreementMember" name="SbioPurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_PaymentForLicenseAgreement" name="PaymentForLicenseAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="meip_PotentialPaymentsOnAchievementOfDevelopmentRegulatoryAndCommercialMilestonesMember" name="PotentialPaymentsOnAchievementOfDevelopmentRegulatoryAndCommercialMilestonesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_ContractAssetsBillableAmounts" name="ContractAssetsBillableAmounts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="meip_LiquidityPolicyTextBlock" name="LiquidityPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="meip_PresageBiosciencesIncMember" name="PresageBiosciencesIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_MinimumBidPricePerShare" name="MinimumBidPricePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="meip_NumberOfSharesForEachUnitOfRestrictedStock" name="NumberOfSharesForEachUnitOfRestrictedStock" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="meip_AccountsReceivableNetBeginningBalance" name="AccountsReceivableNetBeginningBalance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="meip_ReceivablesAmountsBilled" name="ReceivablesAmountsBilled" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="meip_NumberOfWarrantsExercised" name="NumberOfWarrantsExercised" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="meip_EstimatedDevelopmentCostSharingRecoverableThroughEarnings" name="EstimatedDevelopmentCostSharingRecoverableThroughEarnings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="meip_AggregateValueOfSecuritiesAvailableUnderAgreement" name="AggregateValueOfSecuritiesAvailableUnderAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="meip_ContractWithCustomerLiabilityRevenueRecognizedPerformanceObligationsNoLongerCommence" name="ContractWithCustomerLiabilityRevenueRecognizedPerformanceObligationsNoLongerCommence" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="meip_ContractWithCustomerAssetAndLiabilityLineItems" name="ContractWithCustomerAssetAndLiabilityLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_EffectiveIncomeTaxRateReconciliationTaxExpensebenefitWarrantLiabilityAmount" name="EffectiveIncomeTaxRateReconciliationTaxExpensebenefitWarrantLiabilityAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="meip_DevelopmentServicesPerformanceObligationsMember" name="DevelopmentServicesPerformanceObligationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_LicenseObligationAccountTransactionPriceAllocated" name="LicenseObligationAccountTransactionPriceAllocated" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="meip_EventAxis" name="EventAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="meip_InterestExpenseIncomeAsPercentageOfAdjustableTaxableIncome" name="InterestExpenseIncomeAsPercentageOfAdjustableTaxableIncome" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
</xsd:schema>
