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  <xsd:element id="clbs_DeferredTaxAssetsAccumulatedDepreciation" name="DeferredTaxAssetsAccumulatedDepreciation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
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  <xsd:element id="clbs_OperatingLossCarryforwardLimitationBasedOnChangeInOwnership" name="OperatingLossCarryforwardLimitationBasedOnChangeInOwnership" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
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  <xsd:element id="clbs_SaleOfStockAggregateOfferingAmountAuthorizedPerAgreement" name="SaleOfStockAggregateOfferingAmountAuthorizedPerAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="clbs_SaleOfStockAmountPerAgreementAllowableToDirectCounterpartyToPurchaseRegularPurchase" name="SaleOfStockAmountPerAgreementAllowableToDirectCounterpartyToPurchaseRegularPurchase" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="clbs_SaleOfStockCommissionOnGrossProceedsDueToThirdPartyUponPercent" name="SaleOfStockCommissionOnGrossProceedsDueToThirdPartyUponPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="clbs_SaleOfStockMaximumAmountPerAgreementPerTransactionForDirectCounterpartyPurchaseRegularPurchase" name="SaleOfStockMaximumAmountPerAgreementPerTransactionForDirectCounterpartyPurchaseRegularPurchase" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="clbs_SaleOfStockMaximumNumberOfSharesAuthorizedPerAgreement" name="SaleOfStockMaximumNumberOfSharesAuthorizedPerAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="clbs_SaleOfStockMaximumSharesAllowedInAcceleratedPurchaseAsPercentOfSharesInRegularPurchase" name="SaleOfStockMaximumSharesAllowedInAcceleratedPurchaseAsPercentOfSharesInRegularPurchase" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="clbs_SaleOfStockMaximumSharesAllowedInAcceleratedPurchaseAsPercentOfSharesOfStockTradedDuringSpecifiedPeriod" name="SaleOfStockMaximumSharesAllowedInAcceleratedPurchaseAsPercentOfSharesOfStockTradedDuringSpecifiedPeriod" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
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  <xsd:element id="clbs_StockIssuedDuringPeriodSharesIssuedAsConsideration" name="StockIssuedDuringPeriodSharesIssuedAsConsideration" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="clbs_WarrantsWeightedAverageExercisePriceRollForward" name="WarrantsWeightedAverageExercisePriceRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
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  <xsd:element id="clbs_WeightedAverageExercisePriceWarrantsExercisable" name="WeightedAverageExercisePriceWarrantsExercisable" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
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  <xsd:element id="clbs_WeightedAverageExercisePriceWarrantsExpired" name="WeightedAverageExercisePriceWarrantsExpired" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
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  <xsd:element id="clbs_WeightedAverageExercisePriceWarrantsOutstanding" name="WeightedAverageExercisePriceWarrantsOutstanding" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="clbs_WeightedAverageExercisePriceWarrantsVestedAndExpectedToVest" name="WeightedAverageExercisePriceWarrantsVestedAndExpectedToVest" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="clbs_WeightedAverageRemainingContractualTermWarrantsVestedandExpecttoVest" name="WeightedAverageRemainingContractualTermWarrantsVestedandExpecttoVest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
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  <xsd:element id="clbs_WeightedAverageRemainingContractualTermwarrantsvested" name="WeightedAverageRemainingContractualTermwarrantsvested" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
</xsd:schema>
