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  <xs:element id="cntx_December2021PrivatePlacementAgentWarrantsMember" abstract="true" name="December2021PrivatePlacementAgentWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cntx_ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalSharesAuthorizedAsAPercentageOfOutstandingStock" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalSharesAuthorizedAsAPercentageOfOutstandingStock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cntx_OperatingLeaseNumberOfRenewals" abstract="false" name="OperatingLeaseNumberOfRenewals" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="cntx_LesseeOperatingLeaseTermOfRenewalOptionsAvailable" abstract="false" name="LesseeOperatingLeaseTermOfRenewalOptionsAvailable" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cntx_OperatingLeaseRenewalTermAdvanceNoticeRequired" abstract="false" name="OperatingLeaseRenewalTermAdvanceNoticeRequired" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cntx_IntegralMolecularIncMember" abstract="true" name="IntegralMolecularIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cntx_CollaborativeArrangementRightsAndObligationsDevelopmentAndRegulatoryMilestonePaymentsMaximum" abstract="false" name="CollaborativeArrangementRightsAndObligationsDevelopmentAndRegulatoryMilestonePaymentsMaximum" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cntx_CollaborativeArrangementRightsAndObligationsSalesMilestonePaymentsMaximum" abstract="false" name="CollaborativeArrangementRightsAndObligationsSalesMilestonePaymentsMaximum" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cntx_CollaborativeArrangementRightsAndObligationsTieredRoyaltyPercent" abstract="false" name="CollaborativeArrangementRightsAndObligationsTieredRoyaltyPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="cntx_BioAtlaInc.Member" abstract="true" name="BioAtlaInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cntx_CollaborationAndLicenseAgreementsNumberOfLicensedAntibodies" abstract="false" name="CollaborationAndLicenseAgreementsNumberOfLicensedAntibodies" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="cntx_AssetAcquisitionConsiderationToBeTransferredPaymentPeriod" abstract="false" name="AssetAcquisitionConsiderationToBeTransferredPaymentPeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="cntx_AssetAcquisitionConsiderationPayable" abstract="false" name="AssetAcquisitionConsiderationPayable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cntx_MootnessFeeMember" abstract="true" name="MootnessFeeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cntx_StockholderClassActionComplaintTheActionMember" abstract="true" name="StockholderClassActionComplaintTheActionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cntx_CT202LonzaLicenseAgreementMember" abstract="true" name="CT202LonzaLicenseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cntx_LonzaSalesMember" abstract="true" name="LonzaSalesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="cntx_LossContingencyAssertionCertificateOfIncorporationDirectorsInViolationOfSection211bTermProvision" abstract="false" name="LossContingencyAssertionCertificateOfIncorporationDirectorsInViolationOfSection211bTermProvision" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
</xs:schema>
