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        <PersonNm>QUANSHUN ZHANG</PersonNm>
        <TitleTxt>SENIOR SCIENTIST &amp; PROJECT LEADER</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>106201</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>28231</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>NATHAN R WILT</PersonNm>
        <TitleTxt>STUDY DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>114995</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>16432</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>1023944</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>142128</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>8</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <CntrctRcvdGreaterThan100KCnt>0</CntrctRcvdGreaterThan100KCnt>
      <GovernmentGrantsAmt>16438</GovernmentGrantsAmt>
      <AllOtherContributionsAmt>1041164</AllOtherContributionsAmt>
      <TotalContributionsAmt>1057602</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>RESEARCH &amp; TESTING</Desc>
        <BusinessCd>541700</BusinessCd>
        <TotalRevenueColumnAmt>5746011</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>5746011</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>EDUCATION</Desc>
        <BusinessCd>611600</BusinessCd>
        <TotalRevenueColumnAmt>69182</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>69182</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>5815193</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>5609</TotalRevenueColumnAmt>
        <ExclusionAmt>5609</ExclusionAmt>
      </InvestmentIncomeGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <OtherAmt>488</OtherAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <OtherAmt>-488</OtherAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>-488</TotalRevenueColumnAmt>
        <ExclusionAmt>-488</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <OtherRevenueMiscGrp>
        <Desc>OTHER INCOME</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>65</TotalRevenueColumnAmt>
        <ExclusionAmt>65</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>65</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>6877981</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>5815193</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>5186</ExclusionAmt>
      </TotalRevenueGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>386268</TotalAmt>
        <ProgramServicesAmt>249598</ProgramServicesAmt>
        <ManagementAndGeneralAmt>125515</ManagementAndGeneralAmt>
        <FundraisingAmt>11155</FundraisingAmt>
      </CompCurrentOfcrDirectorsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>2857774</TotalAmt>
        <ProgramServicesAmt>2774726</ProgramServicesAmt>
        <ManagementAndGeneralAmt>67455</ManagementAndGeneralAmt>
        <FundraisingAmt>15593</FundraisingAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>85453</TotalAmt>
        <ProgramServicesAmt>81017</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3965</ManagementAndGeneralAmt>
        <FundraisingAmt>471</FundraisingAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>877618</TotalAmt>
        <ProgramServicesAmt>771810</ProgramServicesAmt>
        <ManagementAndGeneralAmt>103972</ManagementAndGeneralAmt>
        <FundraisingAmt>1836</FundraisingAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>296052</TotalAmt>
        <ProgramServicesAmt>279704</ProgramServicesAmt>
        <ManagementAndGeneralAmt>14709</ManagementAndGeneralAmt>
        <FundraisingAmt>1639</FundraisingAmt>
      </PayrollTaxesGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>11013</TotalAmt>
        <ProgramServicesAmt>10933</ProgramServicesAmt>
        <ManagementAndGeneralAmt>80</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>97909</TotalAmt>
        <ManagementAndGeneralAmt>97909</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>80160</TotalAmt>
        <ProgramServicesAmt>79887</ProgramServicesAmt>
        <ManagementAndGeneralAmt>249</ManagementAndGeneralAmt>
        <FundraisingAmt>24</FundraisingAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>26041</TotalAmt>
        <ProgramServicesAmt>26041</ProgramServicesAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>56052</TotalAmt>
        <ProgramServicesAmt>51688</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2192</ManagementAndGeneralAmt>
        <FundraisingAmt>2172</FundraisingAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>186200</TotalAmt>
        <ProgramServicesAmt>176179</ProgramServicesAmt>
        <ManagementAndGeneralAmt>9348</ManagementAndGeneralAmt>
        <FundraisingAmt>673</FundraisingAmt>
      </InformationTechnologyGrp>
      <RoyaltiesGrp>
        <TotalAmt>5091</TotalAmt>
        <ProgramServicesAmt>5091</ProgramServicesAmt>
      </RoyaltiesGrp>
      <OccupancyGrp>
        <TotalAmt>477820</TotalAmt>
        <ProgramServicesAmt>451606</ProgramServicesAmt>
        <ManagementAndGeneralAmt>23565</ManagementAndGeneralAmt>
        <FundraisingAmt>2649</FundraisingAmt>
      </OccupancyGrp>
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        <TotalAmt>116390</TotalAmt>
        <ProgramServicesAmt>107689</ProgramServicesAmt>
        <ManagementAndGeneralAmt>581</ManagementAndGeneralAmt>
        <FundraisingAmt>8120</FundraisingAmt>
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      <ConferencesMeetingsGrp>
        <TotalAmt>21306</TotalAmt>
        <ProgramServicesAmt>16587</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4501</ManagementAndGeneralAmt>
        <FundraisingAmt>218</FundraisingAmt>
      </ConferencesMeetingsGrp>
      <InterestGrp>
        <TotalAmt>9659</TotalAmt>
        <ProgramServicesAmt>9379</ProgramServicesAmt>
        <ManagementAndGeneralAmt>255</ManagementAndGeneralAmt>
        <FundraisingAmt>25</FundraisingAmt>
      </InterestGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>223023</TotalAmt>
        <ProgramServicesAmt>211731</ProgramServicesAmt>
        <ManagementAndGeneralAmt>10140</ManagementAndGeneralAmt>
        <FundraisingAmt>1152</FundraisingAmt>
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      <InsuranceGrp>
        <TotalAmt>80306</TotalAmt>
        <ProgramServicesAmt>64173</ProgramServicesAmt>
        <ManagementAndGeneralAmt>15759</ManagementAndGeneralAmt>
        <FundraisingAmt>374</FundraisingAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>LABORATORY EXPENSES</Desc>
        <TotalAmt>1239098</TotalAmt>
        <ProgramServicesAmt>1239098</ProgramServicesAmt>
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      <OtherExpensesGrp>
        <Desc>PROPERTY TAX</Desc>
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        <ProgramServicesAmt>22687</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1181</ManagementAndGeneralAmt>
        <FundraisingAmt>132</FundraisingAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>DUES/MBSHP/PUBLICATIONS</Desc>
        <TotalAmt>7433</TotalAmt>
        <ProgramServicesAmt>6685</ProgramServicesAmt>
        <ManagementAndGeneralAmt>748</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>BAD DEBT EXPENSE</Desc>
        <TotalAmt>970</TotalAmt>
        <ProgramServicesAmt>970</ProgramServicesAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>7165636</TotalAmt>
        <ProgramServicesAmt>6637279</ProgramServicesAmt>
        <ManagementAndGeneralAmt>482124</ManagementAndGeneralAmt>
        <FundraisingAmt>46233</FundraisingAmt>
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      <CashNonInterestBearingGrp>
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        <EOYAmt>11393</EOYAmt>
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      <SavingsAndTempCashInvstGrp>
        <BOYAmt>839295</BOYAmt>
        <EOYAmt>543171</EOYAmt>
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      <PledgesAndGrantsReceivableGrp>
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        <EOYAmt>50003</EOYAmt>
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      <AccountsReceivableGrp>
        <BOYAmt>1540697</BOYAmt>
        <EOYAmt>1701761</EOYAmt>
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      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>128323</BOYAmt>
        <EOYAmt>124103</EOYAmt>
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      <LandBldgEquipCostOrOtherBssAmt>2491750</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>1441153</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>1076239</BOYAmt>
        <EOYAmt>1050597</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>2890894</BOYAmt>
        <EOYAmt>2671824</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>6566155</BOYAmt>
        <EOYAmt>6152852</EOYAmt>
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      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>487491</BOYAmt>
        <EOYAmt>446846</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
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        <EOYAmt>207001</EOYAmt>
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      <MortgNotesPyblScrdInvstPropGrp>
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        <EOYAmt>95253</EOYAmt>
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      <OtherLiabilitiesGrp>
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        <EOYAmt>3061865</EOYAmt>
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      <TotalLiabilitiesGrp>
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        <EOYAmt>3810965</EOYAmt>
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      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>2594542</BOYAmt>
        <EOYAmt>2306887</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>35000</BOYAmt>
        <EOYAmt>35000</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>2629542</BOYAmt>
        <EOYAmt>2341887</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>6566155</BOYAmt>
        <EOYAmt>6152852</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>-287655</ReconcilationRevenueExpnssAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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      <AuditCommitteeInd>1</AuditCommitteeInd>
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    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>1398615</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>944137</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1949651</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1077048</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1057602</CurrentTaxYearAmt>
        <TotalAmt>6427053</TotalAmt>
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      <GrossReceiptsAdmissionsGrp>
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        <CurrentTaxYearMinus3YearsAmt>4935016</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>4553806</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>5782738</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>5815193</CurrentTaxYearAmt>
        <TotalAmt>25206138</TotalAmt>
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      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>5518000</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>5879153</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>6503457</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>6859786</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>6872795</CurrentTaxYearAmt>
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      <AmountsRcvdDsqlfyPersonGrp>
        <TotalAmt>0</TotalAmt>
      </AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp>
        <CurrentTaxYearMinus4YearsAmt>1527942</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>2767862</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1699036</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>3082135</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>3120738</CurrentTaxYearAmt>
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      <SubstAndDsqlfyPrsnsTotGrp>
        <CurrentTaxYearMinus4YearsAmt>1527942</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>2767862</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1699036</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>3082135</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>3120738</CurrentTaxYearAmt>
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      <GrossInvestmentIncome509Grp>
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        <CurrentTaxYearMinus3YearsAmt>95</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>13</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>440</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>5609</CurrentTaxYearAmt>
        <TotalAmt>7847</TotalAmt>
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      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>1690</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>95</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>13</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>440</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>5609</CurrentTaxYearAmt>
        <TotalAmt>7847</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <OtherIncome509Grp>
        <CurrentTaxYearMinus1YearAmt>897</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>65</CurrentTaxYearAmt>
        <TotalAmt>962</TotalAmt>
      </OtherIncome509Grp>
      <TotalSupportCalendarYearGrp>
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        <CurrentTaxYearMinus3YearsAmt>5879248</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>6503470</CurrentTaxYearMinus2YearsAmt>
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      <PublicSupportPY509Pct>0.63020</PublicSupportPY509Pct>
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      <InvestmentIncomePYPct>0.00010</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>SCHEDULE A, PART III, LINE 12, EXPLANATION OF OTHER INCOME:</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER INCOME - 2022 AMOUNT: $ 897. 2023 AMOUNT: $ 65.</ExplanationTxt>
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    <IRS990ScheduleB documentId="RetDoc1234500001">
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        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
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    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="RetDoc1040000001">
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        <DepreciationAmt>477278</DepreciationAmt>
        <BookValueAmt>373819</BookValueAmt>
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      <EquipmentGrp>
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        <DepreciationAmt>963875</DepreciationAmt>
        <BookValueAmt>676778</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>1050597</TotalBookValueLandBuildingsAmt>
      <OtherAssetsOrgGrp>
        <Desc>DEPOSITS</Desc>
        <BookValueAmt>27425</BookValueAmt>
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      <OtherAssetsOrgGrp>
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        <BookValueAmt>2495144</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>FINANCING LEASE RIGHT-OF-USE ASSET, NET</Desc>
        <BookValueAmt>149255</BookValueAmt>
      </OtherAssetsOrgGrp>
      <TotalBookValueOtherAssetsAmt>2671824</TotalBookValueOtherAssetsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>RIGHT-OF-USE OPERATING LEASE LIABILITY</Desc>
        <Amt>2912610</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>RIGHT-OF-USE FINANCING LEASE LIABILITY</Desc>
        <Amt>149255</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>3061865</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
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      <RevenueNotReportedAmt>0</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>6892392</RevenueSubtotalAmt>
      <OtherRevenuesNotIncludedAmt>-14411</OtherRevenuesNotIncludedAmt>
      <RevenueNotReportedFinclStmtAmt>-14411</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>6877981</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>7180047</TotExpnsEtcAuditedFinclStmtAmt>
      <OtherExpensesIncludedAmt>14411</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>14411</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>7165636</ExpensesSubtotalAmt>
      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>7165636</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>MANAGEMENT EVALUATED THE INSTITUTE'S TAX POSITIONS AND CONCLUDED THAT THE INSTITUTE HAD TAKEN NO UNCERTAIN TAX POSITIONS THAT REQUIRE ADJUSTMENT TO THE FINANCIAL STATEMENTS TO COMPLY WITH THE PROVISIONS OF THIS GUIDANCE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 4B - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>REIMBURSEMENT EXPENSE REPORTED ON PART VIII LINE 11A -14,411.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>REIMBURSEMENT EXPENSE REPORTED ON PART VIII LINE 11A 14,411.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="RetDoc1040500001">
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EAST ASIA AND THE PACIFIC</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>ACTIVITIES RELATED TO IN VITRO (NON-ANIMAL) EDUCATION AND OUTREACH</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>52536</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>ACTIVITIES RELATED TO IN VITRO (NON-ANIMAL) EDUCATION AND OUTREACH</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>20192</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>NORTH AMERICA</RegionTxt>
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        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>ACTIVITIES RELATED TO IN VITRO (NON-ANIMAL) EDUCATION AND OUTREACH</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>6446</RegionTotalExpendituresAmt>
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      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
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      <SubtotalSpentAmt>79174</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>79174</TotalSpentAmt>
      <TransferToForeignCorpInd>0</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>0</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>0</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>0</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>0</ForeignPartnershipInd>
      <BoycottCountriesInd>0</BoycottCountriesInd>
    </IRS990ScheduleF>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
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      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>0</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>HANS A RAABE</PersonNm>
        <TitleTxt>CHIEF OPERATING OFFICER/TREASURER</TitleTxt>
        <BaseCompensationFilingOrgAmt>152122</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
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      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>HOLGER P BEHRSING</PersonNm>
        <TitleTxt>DIRECTOR RESPIRATORY TOXICOLOGY</TitleTxt>
        <BaseCompensationFilingOrgAmt>156149</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>GERTRUDE-EMILIA COSTIN</PersonNm>
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        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>23064</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>168560</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>BRENT J GILBERT</PersonNm>
        <TitleTxt>DIRECTOR, BUSINESS DEVELOPMENT</TitleTxt>
        <BaseCompensationFilingOrgAmt>142402</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>225</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>6127</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>19565</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>168319</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
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    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 QUESTIONNAIRE FROM THE INDEPENDENT TAX CONSULTING FIRM IS FILLED OUT BY THE PRESIDENT, THE CHIEF OPERATING OFFICER AND THE CONTROLLER OF THE CORPORATION. WHEN THE COMPLETED FORM 990 IS RECEIVED FROM THE INDEPENDENT TAX CONSULTING FIRM, IT IS REVIEWED BY ALL THREE OF THE OFFICERS OF THE CORPORATION DURING A MEETING RUN BY THE PRESIDENT. ANY DISCREPANCIES ARE REVIEWED AND ADDRESSED WITH THE INDEPENDENT TAX CONSULTANT. THE FINAL FORM 990 IS SENT TO ALL BOARD MEMBERS BEFORE SUBMISSION TO THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CONFLICT OF INTEREST POLICY IS REVIEWED AT THE ANNUAL MEETING OF THE BOARD OF DIRECTORS BY THE CHAIRMAN OF THE BOARD. EACH MEMBER IS ASKED IF ANY NEW CONFLICT OF INTERESTS HAVE OCCURRED. IF A POTENTIAL CONFLICT IS UNCOVERED, A SOLUTION IS PROPOSED AND VOTED ON BY MEMBERS OF THE BOARD AND RECORDED IN THE OFFICIAL MINUTES. EACH OF THESE ISSUES IS REVIEWED AT THE ANNUAL MEETING OF THE BOARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>DATA ON COMPARABLE SALARIES WITHIN PROFIT AND NON-PROFIT ENTITIES IS COLLECTED FROM VARIOUS SOURCES THROUGHOUT THE YEAR, INCLUDING SURVEYS FROM APPROPRIATE TRADE JOURNALS OR MAGAZINES, PERSONAL CONTACT WITH HUMAN RESOURCE DEPARTMENTS AND ONLINE DATABASES. THIS DATA IS BROUGHT TO A MEETING OF THE BOARD OF DIRECTORS FOR REVIEW AND DISCUSSION IN CORRELATION WITH THE CORPORATION'S REVENUES AND EXPENSES. THE CEO WILL SUGGEST AN INCREASE IN SALARY FOR EACH OFFICER, AND AN OFFICER OR INDEPENDENT BOARD MEMBER WILL SUGGEST AN INCREASE IN SALARY FOR THE CEO. AFTER DISCUSSION AND COMMENTS, THE INCREASES FOR EACH OFFICER ARE VOTED UPON FOR APPROVAL.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>IIVS MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC IN TWO WAYS: 1) REQUESTS CAN BE MADE BY PHONE OR EMAIL; 2) DOCUMENTS ARE AVAILABLE FOR INSPECTION AND COPYING ON-SITE AT IIVS' FACILITIES. THESE DOCUMENTS ARE AVAILABLE FOR THE SAME PERIOD OF DISCLOSURE AS SET FORTH IN SECTION 6104(D).</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>