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  <xsd:element id="lnth_AccruedRebatesDiscountsAndChargebacksCurrent" name="AccruedRebatesDiscountsAndChargebacksCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
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  <xsd:element abstract="true" id="lnth_AdvisoryServicesAndOtherChargesMember" name="AdvisoryServicesAndOtherChargesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="lnth_AssetBasedLoanFacilityMember" name="AssetBasedLoanFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_AssetRetirementObligationLiabilitiesExpectedPresentValue" name="AssetRetirementObligationLiabilitiesExpectedPresentValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="lnth_AssetsOfDisposalGroupIncludingDiscontinuedOperationLineItems" name="AssetsOfDisposalGroupIncludingDiscontinuedOperationLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_AssetsOfDisposalGroupIncludingDiscontinuedOperationLineItemsTable" name="AssetsOfDisposalGroupIncludingDiscontinuedOperationLineItemsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="lnth_BristolMyersSquibbMember" name="BristolMyersSquibbMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_CanadianRadiopharmaciesAndGludefManufacturingAndDistributionBusinessMember" name="CanadianRadiopharmaciesAndGludefManufacturingAndDistributionBusinessMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="lnth_CompanyAMember" name="CompanyAMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_CompanyBMember" name="CompanyBMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_CompanyCMember" name="CompanyCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element id="lnth_CostAssociatedWithDebtRepricing" name="CostAssociatedWithDebtRepricing" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
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  <xsd:element id="lnth_DebtInstrumentCovenantLeverageRatio" name="DebtInstrumentCovenantLeverageRatio" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_DebtInstrumentDiscountAmount" name="DebtInstrumentDiscountAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="lnth_DeferredTaxAssetsCapitalizedResearchAndDevelopment" name="DeferredTaxAssetsCapitalizedResearchAndDevelopment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="lnth_DeferredTaxAssetsIntangibleAssets" name="DeferredTaxAssetsIntangibleAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="lnth_DeferredTaxAssetsMember" name="DeferredTaxAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_DeferredTaxAssetsValuationAllowanceForeignCurrencyTranslationAdjustments" name="DeferredTaxAssetsValuationAllowanceForeignCurrencyTranslationAdjustments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_DefinityMember" name="DefinityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_DivestitureOfBusinessesWorkingCapitalAdjustment" name="DivestitureOfBusinessesWorkingCapitalAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_EarningsPerShareLineItems" name="EarningsPerShareLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_EarningsPerShareTable" name="EarningsPerShareTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_EffectiveIncomeTaxRateReconciliationIncreaseInIndemnificationDeferredTaxAsset" name="EffectiveIncomeTaxRateReconciliationIncreaseInIndemnificationDeferredTaxAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="lnth_EmployeeStockPurchasePlanDiscountPercentage" name="EmployeeStockPurchasePlanDiscountPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_FinancialAssuranceInFormOfSuretyBond" name="FinancialAssuranceInFormOfSuretyBond" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_GEHealthcareLimitedMember" name="GEHealthcareLimitedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_INCResearchHoldingsInc.Member" name="INCResearchHoldingsInc.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_INCResearchLLCMember" name="INCResearchLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_IncomeTaxDisclosureTable" name="IncomeTaxDisclosureTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_IncomeTaxReconciliationDeferredTaxAssetsValuationAllowanceAbstract" name="IncomeTaxReconciliationDeferredTaxAssetsValuationAllowanceAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_IncomeTaxReconciliationTaxCreditsForeignAdjustment" name="IncomeTaxReconciliationTaxCreditsForeignAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="lnth_IncomeTaxReconciliationWriteOffOfForeignTaxAndResearchCredits" name="IncomeTaxReconciliationWriteOffOfForeignTaxAndResearchCredits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="lnth_IncomeTaxReturnsPeriodSubjectToExamination" name="IncomeTaxReturnsPeriodSubjectToExamination" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_IncomeTaxesAndTaxRelatedLineItems" name="IncomeTaxesAndTaxRelatedLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_IncrementalCommonSharesAttributableToRestrictedStockAwards" name="IncrementalCommonSharesAttributableToRestrictedStockAwards" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_IncrementalCommonSharesAttributableToStockOptions" name="IncrementalCommonSharesAttributableToStockOptions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_InternationalSegmentMember" name="InternationalSegmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_InventorySuppliesMember" name="InventorySuppliesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_InventoryWithoutRegulatoryApproval" name="InventoryWithoutRegulatoryApproval" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="lnth_InvestmentTaxCreditsMember" name="InvestmentTaxCreditsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_LeverageRatioRangeAxis" name="LeverageRatioRangeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_LeverageRatioRangeDomain" name="LeverageRatioRangeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_LeverageRatioRangeOneMember" name="LeverageRatioRangeOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_LeverageRatioRangeTwoMember" name="LeverageRatioRangeTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_MachineryEquipmentAndFixturesMember" name="MachineryEquipmentAndFixturesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_NetProceedsFromDivestitureOfBusinessesAssetsDisposed" name="NetProceedsFromDivestitureOfBusinessesAssetsDisposed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="lnth_NoncashItemstoReconcileNetIncomeLosstoCashProvidedbyUsedinOperatingActivitiesDeferredIncomeTaxExpenseBenefit" name="NoncashItemstoReconcileNetIncomeLosstoCashProvidedbyUsedinOperatingActivitiesDeferredIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="lnth_NumberOfCommercialProducts" name="NumberOfCommercialProducts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="lnth_OperatingExpensesBeforeGainLossOnSaleOfAssets" name="OperatingExpensesBeforeGainLossOnSaleOfAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="lnth_OperatingLossCarryforwardsExpirationYear" name="OperatingLossCarryforwardsExpirationYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:gYearItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_OtherComprehensiveIncomeLossReclassificationAdjustmentDueToSaleOfGroupOfAssetsLiabilitiesNotQualifyingAsDiscontinuedOperations" name="OtherComprehensiveIncomeLossReclassificationAdjustmentDueToSaleOfGroupOfAssetsLiabilitiesNotQualifyingAsDiscontinuedOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_OtherProductsMember" name="OtherProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_PerformanceBasedStockOptionsMember" name="PerformanceBasedStockOptionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_PerformanceRestrictedStockMember" name="PerformanceRestrictedStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_PharmacovigilanceMember" name="PharmacovigilanceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_PurchasePriceFromSaleOfAssets" name="PurchasePriceFromSaleOfAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="lnth_RebatesAndAllowancesMember" name="RebatesAndAllowancesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_RecentAccountingPronouncementsTableTextBlock" name="RecentAccountingPronouncementsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_RelatedPartyTransactionAnnualFeeRequiredToBePaid" name="RelatedPartyTransactionAnnualFeeRequiredToBePaid" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="lnth_RelatedPartyTransactionTerminationFee" name="RelatedPartyTransactionTerminationFee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="lnth_RevenueRecognitionMilestoneMethodExpectedMilestoneReceivables" name="RevenueRecognitionMilestoneMethodExpectedMilestoneReceivables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="lnth_SaleOfStockPrice" name="SaleOfStockPrice" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_ScheduleOfAccountingPoliciesLineItems" name="ScheduleOfAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
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  <xsd:element id="lnth_ScheduleOfEstimatedUsefulLifeOfPropertyPlantAndEquipmentTableTableTextBlock" name="ScheduleOfEstimatedUsefulLifeOfPropertyPlantAndEquipmentTableTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_ScheduleOfTermFacilityFinancialCovenantsTableTextBlock" name="ScheduleOfTermFacilityFinancialCovenantsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_ScheduleOfValuationAndQualifyingAccountsTableTextBlock" name="ScheduleOfValuationAndQualifyingAccountsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_StateResearchCreditMember" name="StateResearchCreditMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_StockIssuedDuringPeriodSharesOptionsExercisesDuringPeriodandEmployeeStockOwnershipPlan" name="StockIssuedDuringPeriodSharesOptionsExercisesDuringPeriodandEmployeeStockOwnershipPlan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_StockIssuedDuringPeriodValueStockOptionsExercisedandEmployeeStockOwnershipPlan" name="StockIssuedDuringPeriodValueStockOptionsExercisedandEmployeeStockOwnershipPlan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="lnth_TaxCreditCarryforwardWithoutExpirationDateAmount" name="TaxCreditCarryforwardWithoutExpirationDateAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="lnth_TaxCreditCarryforwardsExpirationYear" name="TaxCreditCarryforwardsExpirationYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:gYearItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_TaxIndemnificationIncomeLoss" name="TaxIndemnificationIncomeLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="lnth_TaxIndemnificationReceivable" name="TaxIndemnificationReceivable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="lnth_TechneLiteMember" name="TechneLiteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_TermOfAgreement" name="TermOfAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_TerminationFeeMember" name="TerminationFeeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_TimeBasedStockOptionsMember" name="TimeBasedStockOptionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_TwoThousandAndFifteenTermFacilityMember" name="TwoThousandAndFifteenTermFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_TwoThousandAndSeventeenFacilityMember" name="TwoThousandAndSeventeenFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_TwoThousandAndSeventeenTermFacilityMember" name="TwoThousandAndSeventeenTermFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_TwoThousandSeventeenEmployeeStockPurchasePlanMember" name="TwoThousandSeventeenEmployeeStockPurchasePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_UnvestedRestrictedStockMember" name="UnvestedRestrictedStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_UpfrontCashPaymentUnderLicenseAgreement" name="UpfrontCashPaymentUnderLicenseAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_UsSegmentMember" name="UsSegmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="lnth_VWRScientificMember" name="VWRScientificMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_ValuationAllowancesandReservesReleaseofValuationAllowance" name="ValuationAllowancesandReservesReleaseofValuationAllowance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="lnth_VestingOfRestrictedStockAwards" name="VestingOfRestrictedStockAwards" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="lnth_VestingOfRestrictedStockAwardsValue" name="VestingOfRestrictedStockAwardsValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="lnth_WorkingCapitalAdjustment" name="WorkingCapitalAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="lnth_WorkingCapitalAssetsLiabilitiesSold" name="WorkingCapitalAssetsLiabilitiesSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="lnth_XenonMember" name="XenonMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
