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  <xs:element id="tars_IrvineOfficeAndFacilitiesLeaseMember" abstract="true" name="IrvineOfficeAndFacilitiesLeaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="tars_AdditionalStockToBeIssuedOnEighteenMonthAgreementAnniversarySharePriceIssuedForServices" abstract="false" name="AdditionalStockToBeIssuedOnEighteenMonthAgreementAnniversarySharePriceIssuedForServices" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:perShareItemType"/>
  <xs:element id="tars_LesseeOperatingLeaseNumberOfContractsNotImpaired" abstract="false" name="LesseeOperatingLeaseNumberOfContractsNotImpaired" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tars_AdditionalStockToBeIssuedOnEighteenMonthAgreementAnniversarySharesIssuedForServices" abstract="false" name="AdditionalStockToBeIssuedOnEighteenMonthAgreementAnniversarySharesIssuedForServices" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="tars_OtherFacilityLeasesMember" abstract="true" name="OtherFacilityLeasesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="tars_SalesMilestoneMember" abstract="true" name="SalesMilestoneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="tars_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriodAfterDateOfTerminationUponDisability" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriodAfterDateOfTerminationUponDisability" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="tars_EquityWarrantsFairValueDisclosure" abstract="false" name="EquityWarrantsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tars_AdditionalStockToBeIssuedOnEighteenMonthAgreementAnniversaryValueIssuedForServices" abstract="false" name="AdditionalStockToBeIssuedOnEighteenMonthAgreementAnniversaryValueIssuedForServices" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tars_AccruedClinicalStudiesCurrent" abstract="false" name="AccruedClinicalStudiesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tars_LicenseAndCollaborationMember" abstract="true" name="LicenseAndCollaborationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="tars_DecapitalizationOfOperatingLeaseRightOfUseAssetLeaseTermination" abstract="false" name="DecapitalizationOfOperatingLeaseRightOfUseAssetLeaseTermination" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tars_NumberOfEmploymentArrangementsWithExecutiveOfficers" abstract="false" name="NumberOfEmploymentArrangementsWithExecutiveOfficers" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="tars_EquityWarrantRights" abstract="false" name="EquityWarrantRights" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="tars_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriodAfterDateOfTerminationUponAllOtherSeparations" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationPeriodAfterDateOfTerminationUponAllOtherSeparations" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
</xs:schema>
