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  <xsd:element id="mist_WarrantsIssuedDuringPeriodValue" name="WarrantsIssuedDuringPeriodValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="mist_WarrantsIssuedDuringPeriodShares" name="WarrantsIssuedDuringPeriodShares" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="mist_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledNumberOfShares" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledNumberOfShares" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="mist_AdjustmentToRightOfUseAsset" name="AdjustmentToRightOfUseAsset" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="mist_ClassOfWarrantOrRightIssued" name="ClassOfWarrantOrRightIssued" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="mist_PrefundedWarrantsPolicyTextBlock" name="PrefundedWarrantsPolicyTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="mist_ScientificResearchAndExperimentalDevelopmentExpenditures" name="ScientificResearchAndExperimentalDevelopmentExpenditures" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="mist_CollaborationAndLicenseAgreementsAbstract" name="CollaborationAndLicenseAgreementsAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="mist_PotentialRevenueFromCollaborativeArrangement" name="PotentialRevenueFromCollaborativeArrangement" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="mist_UpfrontMilestonePayment" name="UpfrontMilestonePayment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="mist_NumberOfPerformanceObligations" name="NumberOfPerformanceObligations" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="mist_WeightedAverageNumberOfSharesAndPrefundedWarrantsOutstandingBasic" name="WeightedAverageNumberOfSharesAndPrefundedWarrantsOutstandingBasic" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" abstract="false" />
  <xsd:element id="mist_RtwInvestmentsLpMember" name="RtwInvestmentsLpMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="mist_PercentageOfCommonSharesHeldByBeneficialOwner" name="PercentageOfCommonSharesHeldByBeneficialOwner" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrossNonvested" id="mist_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrossNonvested" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="OtherReceivablesMember" id="mist_OtherReceivablesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OperatingLeaseAssetsMember" id="mist_OperatingLeaseAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OperatingLeaseLiabilitiesMember" id="mist_OperatingLeaseLiabilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WeightedAverageNumberOfSharesAndPrefundedWarrantsOutstandingDiluted" id="mist_WeightedAverageNumberOfSharesAndPrefundedWarrantsOutstandingDiluted" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeStockPurchasePlanMember" id="mist_EmployeeStockPurchasePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InducementPlanMember" id="mist_InducementPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="Plans2011And2019And2021InducementMember" id="mist_Plans2011And2019And2021InducementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AccretionAmortizationExpenseOfInvestmentDiscountOrPremium" id="mist_AccretionAmortizationExpenseOfInvestmentDiscountOrPremium" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DebtInstrumentCouponRatePercentage" id="mist_DebtInstrumentCouponRatePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="FundingReceivedUponSaleOfProductRights" id="mist_FundingReceivedUponSaleOfProductRights" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AggregateNetSalesUpTo500MillionMember" id="mist_AggregateNetSalesUpTo500MillionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AggregateNetSalesUpTo800MillionMember" id="mist_AggregateNetSalesUpTo800MillionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AggregateNetSalesAbove800MillionMember" id="mist_AggregateNetSalesAbove800MillionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FuturePaymentsOnProductSalesAsPercentOfAggregateNetSales" id="mist_FuturePaymentsOnProductSalesAsPercentOfAggregateNetSales" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AdditionalFuturePaymentsOnProductSalesAsPercentOfAggregateNetSales" id="mist_AdditionalFuturePaymentsOnProductSalesAsPercentOfAggregateNetSales" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ThresholdAnnualAggregateNetSalesForFuturePaymentsCalculation" id="mist_ThresholdAnnualAggregateNetSalesForFuturePaymentsCalculation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="StrategicFinancingAgreementsMember" id="mist_StrategicFinancingAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AggregateNetSalesAbove500MillionMember" id="mist_AggregateNetSalesAbove500MillionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PurchaseAndSaleAgreementAbstract" id="mist_PurchaseAndSaleAgreementAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RoyaltyPurchaseAgreementTextBlock" id="mist_RoyaltyPurchaseAgreementTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="RoyaltyPurchaseAgreementTable" id="mist_RoyaltyPurchaseAgreementTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RoyaltyPurchaseAgreementLineItems" id="mist_RoyaltyPurchaseAgreementLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LicenseReceivablesCurrentTotal" id="mist_LicenseReceivablesCurrentTotal" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="IncreaseDecreaseInLicenseReceivable" id="mist_IncreaseDecreaseInLicenseReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DebtInstrumentPaidInKindInterestTerm" id="mist_DebtInstrumentPaidInKindInterestTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DebtInstrumentPrincipalAmountDenominationForConversionIntoCommonStock" id="mist_DebtInstrumentPrincipalAmountDenominationForConversionIntoCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DebtInstrumentConvertibleSharesIssuable" id="mist_DebtInstrumentConvertibleSharesIssuable" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ScheduleOfInterestCostOnDebtTableTextBlock" id="mist_ScheduleOfInterestCostOnDebtTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DebtInstrumentPaidInKindInterestPayable" id="mist_DebtInstrumentPaidInKindInterestPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AccruedCommercialLiabilitiesCurrent" id="mist_AccruedCommercialLiabilitiesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DeferredTaxAssetsRightOfUseAssets" id="mist_DeferredTaxAssetsRightOfUseAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DeferredTaxAssetsLeaseLiability" id="mist_DeferredTaxAssetsLeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DeferredTaxAssetsReserves" id="mist_DeferredTaxAssetsReserves" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ClinicalReceivableCurrent" id="mist_ClinicalReceivableCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="OtherCurrentReceivable" id="mist_OtherCurrentReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="LorenzMullerMember" id="mist_LorenzMullerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PercentageOfWagesEligibleEmployeesAuthorizeToPurchaseCommonStock" id="mist_PercentageOfWagesEligibleEmployeesAuthorizeToPurchaseCommonStock" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEmployeeStockPurchasePlanMarketDiscountAtBeginningOrEndingPurchaseInterval" id="mist_ShareBasedCompensationArrangementByShareBasedPaymentAwardEmployeeStockPurchasePlanMarketDiscountAtBeginningOrEndingPurchaseInterval" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEmployeeStockPurchasePlanMarketIntervalTerm" id="mist_ShareBasedCompensationArrangementByShareBasedPaymentAwardEmployeeStockPurchasePlanMarketIntervalTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEmployeeStockPurchasePlanResetTerm" id="mist_ShareBasedCompensationArrangementByShareBasedPaymentAwardEmployeeStockPurchasePlanResetTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="PerformanceStockOptionsMember" id="mist_PerformanceStockOptionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValue" id="mist_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ProceedsFromIssuanceOfPreFundedWarrantsNetOfIssuanceCosts" id="mist_ProceedsFromIssuanceOfPreFundedWarrantsNetOfIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="CorxelMember" id="mist_CorxelMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="Rule10b51ArrangementModified" id="mist_Rule10b51ArrangementModified" type="xbrli:booleanItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="NonRule10b51ArrangementModified" id="mist_NonRule10b51ArrangementModified" type="xbrli:booleanItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="SingleReportableSegmentMember" id="mist_SingleReportableSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FederalTaxAbatementAndGeneralTaxReductionPercentTotal" id="mist_FederalTaxAbatementAndGeneralTaxReductionPercentTotal" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AdditionalProvincialTaxPercentTotal" id="mist_AdditionalProvincialTaxPercentTotal" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="SeriesaCommonWarrantsMember" id="mist_SeriesaCommonWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SeriesbCommonWarrantsMember" id="mist_SeriesbCommonWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PreFundedWarrantSeriesaCommonWarrantsMember" id="mist_PreFundedWarrantSeriesaCommonWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WarrantsOfferingPrice" id="mist_WarrantsOfferingPrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="PreFundedWarrantSeriesBCommonWarrantsMember" id="mist_PreFundedWarrantSeriesBCommonWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="JoesephOlivetoMember" id="mist_JoesephOlivetoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AmitHasijaMember" id="mist_AmitHasijaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="StockIssuedDuringPeriodValueWarrantsExercised" id="mist_StockIssuedDuringPeriodValueWarrantsExercised" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="StockIssuedDuringPeriodSharesWarrantsExercised" id="mist_StockIssuedDuringPeriodSharesWarrantsExercised" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EmployeeWithholdingTaxesReceivableCurrent" id="mist_EmployeeWithholdingTaxesReceivableCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="RoyaltyPurchaseAgreementPurchasePrice" id="mist_RoyaltyPurchaseAgreementPurchasePrice" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ProceedsFromWarrantExercisesNet" id="mist_ProceedsFromWarrantExercisesNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ShareAndDebtIssuanceCostsPolicyPolicyTextBock" id="mist_ShareAndDebtIssuanceCostsPolicyPolicyTextBock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AccruedUnderwritingFeesCurrent" id="mist_AccruedUnderwritingFeesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="OpenMarketSalesAgreementAnd2025OfferingMember" id="mist_OpenMarketSalesAgreementAnd2025OfferingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ProceedsFromIssuanceOfCommonStockGross" id="mist_ProceedsFromIssuanceOfCommonStockGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="NumberOfWarrantsExercised" id="mist_NumberOfWarrantsExercised" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationTaxBenefitOfCurrentPeriodLossesAndOtherAssetsPercent" id="mist_EffectiveIncomeTaxRateReconciliationTaxBenefitOfCurrentPeriodLossesAndOtherAssetsPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BasicFederalStatutoryTaxRatePercent" id="mist_BasicFederalStatutoryTaxRatePercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="GeneralTaxRateReductionPercent" id="mist_GeneralTaxRateReductionPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="FederalTaxRateAbatementPercent" id="mist_FederalTaxRateAbatementPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ProvincialTaxRatePercent" id="mist_ProvincialTaxRatePercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationFederalStateAndLocalIncomeTaxesAmount" id="mist_EffectiveIncomeTaxRateReconciliationFederalStateAndLocalIncomeTaxesAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="IncomeTaxReconciliationUnrecognizedTaxBenefitChanges" id="mist_IncomeTaxReconciliationUnrecognizedTaxBenefitChanges" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationBenefitOfUnrecognizedTaxBenefitsPercent" id="mist_EffectiveIncomeTaxRateReconciliationBenefitOfUnrecognizedTaxBenefitsPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
</xsd:schema>
