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        <PersonNm>AKIKO IWASAKI PHD</PersonNm>
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        <PersonNm>MARIA ZAVARELLO CPA</PersonNm>
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        <PersonNm>LAUREN G GROSS JD</PersonNm>
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        <PersonNm>MARY LITZINGER PHD</PersonNm>
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        <PersonNm>MICHAEL CUDDY</PersonNm>
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        <PersonNm>CAROLINE LACEY</PersonNm>
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          <USAddress>
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        <CurrentTaxYearMinus3YearsAmt>396277</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>879558</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>800065</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>870031</CurrentTaxYearAmt>
        <TotalAmt>3332156</TotalAmt>
      </GrossReceiptsNonUnrltBusGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>9928861</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>10314636</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>10239300</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>10225867</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>9903019</CurrentTaxYearAmt>
        <TotalAmt>50611683</TotalAmt>
      </Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp>
        <CurrentTaxYearMinus4YearsAmt>11260</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>11178</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>11329</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>14335</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>13431</CurrentTaxYearAmt>
        <TotalAmt>61533</TotalAmt>
      </AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp>
        <CurrentTaxYearMinus4YearsAmt>100336</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>121737</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>75314</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>90257</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>88229</CurrentTaxYearAmt>
        <TotalAmt>475873</TotalAmt>
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        <CurrentTaxYearMinus4YearsAmt>111596</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>132915</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>86643</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>104592</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>101660</CurrentTaxYearAmt>
        <TotalAmt>537406</TotalAmt>
      </SubstAndDsqlfyPrsnsTotGrp>
      <PublicSupportTotal509Amt>50074277</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>781345</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>758389</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>724079</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>710360</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>820719</CurrentTaxYearAmt>
        <TotalAmt>3794892</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <Post1975UBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>282449</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>93019</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>240932</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>136991</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>185264</CurrentTaxYearAmt>
        <TotalAmt>938655</TotalAmt>
      </Post1975UBTIGrp>
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        <CurrentTaxYearMinus4YearsAmt>1063794</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>851408</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>965011</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>847351</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1005983</CurrentTaxYearAmt>
        <TotalAmt>4733547</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <OtherIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>10586</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>193352</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>54303</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>120</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>8100</CurrentTaxYearAmt>
        <TotalAmt>266461</TotalAmt>
      </OtherIncome509Grp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>11003241</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>11359396</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>11258614</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>11073338</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>10917102</CurrentTaxYearAmt>
        <TotalAmt>55611691</TotalAmt>
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      <PublicSupportCY509Pct>0.90040</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.90370</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.08510</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.08220</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>SCHEDULE A, PART III, LINE 12, EXPLANATION OF OTHER INCOME:</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER INCOME - 2014 AMOUNT: $ 10,586. 2015 AMOUNT: $ 7,765. 2016 AMOUNT: $ 2,639. 2017 AMOUNT: $ 120. 2018 AMOUNT: $ 8,100. TAX RECOVERY - 2015 AMOUNT: $ 185,587. 2016 AMOUNT: $ 51,664.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleC documentId="RetDoc1039600001">
      <TotalDirectLobbyingGrp>
        <FilingOrganizationsTotalAmt>42918</FilingOrganizationsTotalAmt>
      </TotalDirectLobbyingGrp>
      <TotalLobbyingExpendGrp>
        <FilingOrganizationsTotalAmt>42918</FilingOrganizationsTotalAmt>
      </TotalLobbyingExpendGrp>
      <OtherExemptPurposeExpendGrp>
        <FilingOrganizationsTotalAmt>10472598</FilingOrganizationsTotalAmt>
      </OtherExemptPurposeExpendGrp>
      <TotalExemptPurposeExpendGrp>
        <FilingOrganizationsTotalAmt>10515516</FilingOrganizationsTotalAmt>
      </TotalExemptPurposeExpendGrp>
      <LobbyingNontaxableAmountGrp>
        <FilingOrganizationsTotalAmt>675776</FilingOrganizationsTotalAmt>
      </LobbyingNontaxableAmountGrp>
      <GrassrootsNontaxableGrp>
        <FilingOrganizationsTotalAmt>168944</FilingOrganizationsTotalAmt>
      </GrassrootsNontaxableGrp>
      <TotLbbyngGrassrootMnsNonTxGrp>
        <FilingOrganizationsTotalAmt>0</FilingOrganizationsTotalAmt>
      </TotLbbyngGrassrootMnsNonTxGrp>
      <TotLbbyExpendMnsLbbyngNonTxGrp>
        <FilingOrganizationsTotalAmt>0</FilingOrganizationsTotalAmt>
      </TotLbbyExpendMnsLbbyngNonTxGrp>
      <AvgLobbyingNontaxableAmountGrp>
        <CurrentYearMinus3Amt>702261</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>734650</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>727914</CurrentYearMinus1Amt>
        <CurrentYearAmt>675776</CurrentYearAmt>
        <TotalAmt>2840601</TotalAmt>
      </AvgLobbyingNontaxableAmountGrp>
      <LobbyingCeilingAmt>4260902</LobbyingCeilingAmt>
      <AvgTotalLobbyingExpendGrp>
        <CurrentYearMinus3Amt>64826</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>51834</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>64248</CurrentYearMinus1Amt>
        <CurrentYearAmt>42918</CurrentYearAmt>
        <TotalAmt>223826</TotalAmt>
      </AvgTotalLobbyingExpendGrp>
      <AvgGrassrootsNontaxableGrp>
        <CurrentYearMinus3Amt>175565</CurrentYearMinus3Amt>
        <CurrentYearMinus2Amt>183663</CurrentYearMinus2Amt>
        <CurrentYearMinus1Amt>181979</CurrentYearMinus1Amt>
        <CurrentYearAmt>168944</CurrentYearAmt>
        <TotalAmt>710151</TotalAmt>
      </AvgGrassrootsNontaxableGrp>
      <GrassrootsCeilingAmt>1065227</GrassrootsCeilingAmt>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>949622</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>240162</DepreciationAmt>
        <BookValueAmt>709460</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>435874</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>373499</DepreciationAmt>
        <BookValueAmt>62375</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>252724</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>155739</DepreciationAmt>
        <BookValueAmt>96985</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>868820</TotalBookValueLandBuildingsAmt>
      <OtherSecuritiesGrp>
        <Desc>HEDGE FUNDS</Desc>
        <BookValueAmt>5421854</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <TotalBookValueSecuritiesAmt>5421854</TotalBookValueSecuritiesAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>DEFERRED COMPENSATION PLAN</Desc>
        <Amt>504107</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>DEFERRED RENT</Desc>
        <Amt>1024113</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>1528220</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>8748593</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>-4325170</NetUnrealizedGainsInvstAmt>
      <DonatedServicesAndUseFcltsAmt>2840</DonatedServicesAndUseFcltsAmt>
      <RevenueNotReportedAmt>-4322330</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>13070923</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>522060</InvestmentExpensesNotIncldAmt>
      <RevenueNotReportedFinclStmtAmt>522060</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>13592983</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>9986216</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>2840</DonatedServicesUseFcltsAmt>
      <ExpensesNotReportedAmt>2840</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>9983376</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>522060</InvestmentExpensesNotIncld2Amt>
      <OtherExpensesNotIncludedAmt>10080</OtherExpensesNotIncludedAmt>
      <ExpensesNotRptFinclStmtAmt>532140</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>10515516</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>AAI IS EXEMPT FROM THE PAYMENT OF FEDERAL AND STATE TAXES ON INCOME OTHER THAN NET UNRELATED BUSINESS INCOME UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE (IRC). AAI RECEIVES UNRELATED BUSINESS INCOME FROM THE SALE OF ADVERTISING AND INVESTMENTS IN HEDGE FUNDS. AAI HAS BEEN CLASSIFIED AS AN ORGANIZATION THAT IS NOT A PRIVATE FOUNDATION. DURING THE YEAR ENDED DECEMBER 31, 2018, AAI GENERATED $296,230 IN GROSS TAXABLE UNRELATED BUSINESS INCOME. THE INCOME TAX EXPENSE ASSOCIATED WITH THE UNRELATED BUSINESS INCOME WAS $10,080 FOR THE YEAR ENDED DECEMBER 31, 2018, AND HAS BEEN RECORDED IN THE ACCOMPANYING FINANCIAL STATEMENTS. MANAGEMENT EVALUATED THE TAX POSITIONS AND CONCLUDED THAT AAI HAS TAKEN NO UNCERTAIN TAX POSITIONS THAT REQUIRE ADJUSTMENT TO THE FINANCIAL STATEMENTS TO COMPLY WITH THE PROVISIONS OF THIS GUIDANCE. GENERALLY, AAI IS NO LONGER SUBJECT TO INCOME TAX EXAMINATIONS BY THE U.S. FEDERAL, STATE OR LOCAL TAX AUTHORITIES FOR YEARS BEFORE 2015. IT IS THE POLICY OF AAI TO RECOGNIZE INTEREST AND/OR PENALTIES RELATED TO UNCERTAIN TAX POSITIONS, IF ANY, IN INCOME TAX EXPENSE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 4B - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>INCOME TAX EXPENSE 10,080.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
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      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SUB-SAHARAN AFRICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTS TO RECIPIENTS</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>4711</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH ASIA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTS TO RECIPIENTS</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>1199</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTS TO RECIPIENTS</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>4517</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>MIDDLE EAST AND NORTH AFRICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTS TO RECIPIENTS</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>3857</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTS TO RECIPIENTS</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>4949</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTS TO RECIPIENTS</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>20563</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>GRANTS TO RECIPIENTS</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>10000</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>CENTRAL AMERICA AND THE CARIBBEAN</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>INVESTMENTS</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>2666320</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
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      <ContinuationTotalOfficeCnt>0</ContinuationTotalOfficeCnt>
      <ContinuationTotalEmployeeCnt>0</ContinuationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>2716116</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>2716116</TotalSpentAmt>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <PurposeOfGrantTxt>SUPPORT SCIENTISTS FROM DEVELOPING COUNTRIES</PurposeOfGrantTxt>
        <CashGrantAmt>20563</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <PurposeOfGrantTxt>SUPPORT YOUNG SCIENTISTS ATTENDING THE XII CONGRESS OF THE LATIN AMERICAN ASSOCIATION OF IMMUNOLOGY</PurposeOfGrantTxt>
        <CashGrantAmt>10000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
      </GrantsToOrgOutsideUSGrp>
      <Total501c3OrgCnt>2</Total501c3OrgCnt>
      <TotalOtherOrgCnt>0</TotalOtherOrgCnt>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL GRANTS FOR SCIENTIFIC COURSE</TypeOfAssistanceTxt>
        <RegionTxt>SUB-SAHARAN AFRICA</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <NonCashAssistanceAmt>711</NonCashAssistanceAmt>
        <DescriptionOfNonCashAsstTxt>FREE LODGING FOR COURSE ATTENDANCE</DescriptionOfNonCashAsstTxt>
        <ValuationMethodUsedDesc>STATED HOTEL FEE</ValuationMethodUsedDesc>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL GRANTS FOR SCIENTIFIC COURSE</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH ASIA</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <NonCashAssistanceAmt>1199</NonCashAssistanceAmt>
        <DescriptionOfNonCashAsstTxt>FREE LODGING FOR COURSE ATTENDANCE</DescriptionOfNonCashAsstTxt>
        <ValuationMethodUsedDesc>STATED HOTEL FEE</ValuationMethodUsedDesc>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL GRANTS FOR SCIENTIFIC COURSE</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <RecipientCnt>3</RecipientCnt>
        <NonCashAssistanceAmt>4517</NonCashAssistanceAmt>
        <DescriptionOfNonCashAsstTxt>FREE LODGING FOR COURSE ATTENDANCE</DescriptionOfNonCashAsstTxt>
        <ValuationMethodUsedDesc>STATED HOTEL FEE</ValuationMethodUsedDesc>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL GRANTS FOR SCIENTIFIC COURSE</TypeOfAssistanceTxt>
        <RegionTxt>MIDDLE EAST AND NORTH AFRICA</RegionTxt>
        <RecipientCnt>2</RecipientCnt>
        <NonCashAssistanceAmt>2857</NonCashAssistanceAmt>
        <DescriptionOfNonCashAsstTxt>FREE LODGING FOR COURSE ATTENDANCE</DescriptionOfNonCashAsstTxt>
        <ValuationMethodUsedDesc>STATED HOTEL FEE</ValuationMethodUsedDesc>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL GRANTS FOR SCIENTIFIC COURSE</TypeOfAssistanceTxt>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <NonCashAssistanceAmt>1199</NonCashAssistanceAmt>
        <DescriptionOfNonCashAsstTxt>FREE LODGING FOR COURSE ATTENDANCE</DescriptionOfNonCashAsstTxt>
        <ValuationMethodUsedDesc>STATED HOTEL FEE</ValuationMethodUsedDesc>
      </ForeignIndividualsGrantsGrp>
      <TransferToForeignCorpInd>1</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>0</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>0</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>0</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>0</ForeignPartnershipInd>
      <BoycottCountriesInd>0</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>FOREIGN INDIVIDUALS WERE GIVEN TRAVEL GRANTS TO ATTEND OUR IMMUNOLOGY COURSES IN THE U.S. PAYMENTS WERE MADE BASED ON ATTENDANCE AND EXPENSES WERE DOCUMENTED.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleF>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>THERMO FISHER MERITORIOUS CAREER AWARD</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>11800</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>DISTINGUISHED SERVICE AWARD</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2041</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>EXCELLENCE IN MENTORING AWARD</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1289</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>LIFETIME ACHIEVEMENT AWARD</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>407</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>HUMAN IMMUNOLOGY RESEARCH AWARD</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>6382</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>BD BIOSCIENCES INVESTIGATOR AWARD</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>6436</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>CHAMBERS EBIOSCIENCE AWARD</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>BIOLEGEND HERZENBERG AWARD</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>6576</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>TRAINEE ABSTRACT AWARDS</GrantTypeTxt>
        <RecipientCnt>272</RecipientCnt>
        <CashGrantAmt>158480</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>EARLY CAREER FACULTY TRAVEL GRANT</GrantTypeTxt>
        <RecipientCnt>85</RecipientCnt>
        <CashGrantAmt>103508</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>LABORATORY TRAVEL AWARDS</GrantTypeTxt>
        <RecipientCnt>112</RecipientCnt>
        <CashGrantAmt>132854</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>THERMO FISHER TRAINEE ACHIEVEMENT AWARDS</GrantTypeTxt>
        <RecipientCnt>6</RecipientCnt>
        <CashGrantAmt>11815</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>YOUNG SCHOLAR TRAVEL AWARD</GrantTypeTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>2833</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>UNDERGRADUATE FACULTY TRAVEL AWARDS</GrantTypeTxt>
        <RecipientCnt>36</RecipientCnt>
        <CashGrantAmt>38351</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>PFIZER SHOWELL TRAVEL AWARD</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>LEFRANCOIS MEMORIAL AWARD</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>TRAINEE POSTER AWARD</GrantTypeTxt>
        <RecipientCnt>83</RecipientCnt>
        <CashGrantAmt>22015</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>TRAVEL FOR TECHNIQUES AWARD</GrantTypeTxt>
        <RecipientCnt>5</RecipientCnt>
        <CashGrantAmt>6131</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>CAREERS IN IMMUNOLOGY FELLOWSHIP</GrantTypeTxt>
        <RecipientCnt>28</RecipientCnt>
        <CashGrantAmt>964487</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>TRAVEL AWARD TO ALAI</GrantTypeTxt>
        <RecipientCnt>6</RecipientCnt>
        <CashGrantAmt>6442</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>TRAVEL AWARDS TO ECI</GrantTypeTxt>
        <RecipientCnt>44</RecipientCnt>
        <CashGrantAmt>86494</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>GRANTS AND AWARDS MADE INSIDE THE UNITED STATES ARE FOR PAST SCIENTIFIC RESEARCH EXCELLENCE AND REQUIRE A LECTURE AND ATTENDANCE AT THE ANNUAL SCIENTIFIC MEETING. OTHER GRANTS AND AWARDS REQUIRE A SELECTED ABSTRACT PRESENTATION AND/OR TRAVEL TO THE ANNUAL SCIENTIFIC MEETING OR SUPERVISED PERFORMANCE IN A LABORATORY SETTING.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <FirstClassOrCharterTravelInd>X</FirstClassOrCharterTravelInd>
      <WrittenPolicyRefTAndEExpnssInd>1</WrittenPolicyRefTAndEExpnssInd>
      <SubstantiationRequiredInd>1</SubstantiationRequiredInd>
      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>1</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>M MICHELE HOGAN PHD</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>434067</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>10000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>10668</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>46000</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>6145</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>506880</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MARIA ZAVARELLO CPA</PersonNm>
        <TitleTxt>DIRECTOR OF FINANCE</TitleTxt>
        <BaseCompensationFilingOrgAmt>174353</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>7218</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>17454</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>2250</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>201275</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>LAUREN G GROSS JD</PersonNm>
        <TitleTxt>DIRECTOR, PUBLIC POLICY/GOV'T AFFAIR</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>5000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>5061</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>22240</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>2281</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>256986</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 7</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION PAID PERFORMANCE BASED BONUSES.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>AAI HAS FIVE CLASSES OF MEMBERSHIP. THEY ARE: REGULAR, ASSOCIATE, HONORARY, TRAINEE AND EMERITUS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>REGULAR AND EMERITUS MEMBERS OF AAI ANNUALLY ELECT THE OFFICERS AND AT LEAST ONE NEW COUNCILLOR.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>REGULAR AND EMERITUS MEMBERS OF AAI HAVE THE AUTHORITY TO APPROVE CERTAIN RECOMMENDATIONS MADE BY THE COUNCIL (BOD), SUCH AS CHANGES IN ANNUAL DUES AND AMENDMENTS TO THE BYLAWS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FEDERAL FORM 990 IS PREPARED BY AN EXTERNAL AUDITING FIRM AND THEN REVIEWED BY THE DIRECTOR OF FINANCE AND THE SENIOR ACCOUNTANT. AFTER REVIEW AND MODIFICATION, AS NECESSARY, THE RETURN IS REVIEWED BY THE SECRETARY/TREASURER, AS THE DESIGNEE OF THE COUNCIL (BOD).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ANNUALLY THE AAI COUNCIL, KEY EMPLOYEES, AND KEY COMMITTEE CHAIR PERSONS AND MEMBERS COMPLETE THE CONFLICT OF INTEREST STATEMENT, WHICH IS AVAILABLE TO ALL COUNCIL MEMBERS AND THE EXECUTIVE DIRECTOR. IF A CONFLICT OR PERCEIVED CONFLICT ARISES, THE APPROPRIATE PERSON IS RECUSED FROM DELIBERATION AND VOTING, AND THE MINUTES OF THE MEETING ALSO REFLECT THAT ACTION. ADDITIONALLY, THE EXECUTIVE DIRECTOR KEEPS ABREAST OF THE ACTIVITIES OF AAI, AND QUESTIONS ANY POTENTIAL CONFLICT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>OFFICERS ARE NOT COMPENSATED FOR THEIR SERVICE AS COUNCILORS OR OFFICERS. THE COUNCIL (BOD) MAINTAINS AN EMPLOYMENT CONTRACT WITH THE EXECUTIVE DIRECTOR AND ANNUALLY, AT ITS FALL MEETING, DETERMINES THE COMPENSATION OF THE EXECUTIVE DIRECTOR FOR THE SUBSEQUENT YEAR. THE DETERMINATION IS MADE AFTER REVIEW OF SEVERAL SALARY SURVEYS OF SIMILAR ORGANIZATIONS IN THE SAME GEOGRAPHIC AREA AND AN EVALUATION OF THE EXECUTIVE DIRECTOR'S PERFORMANCE. A MEMORANDUM FOR THE RECORD IS PREPARED SOON THEREAFTER DOCUMENTING THE PROCESS AND THE ACTION AND STATING THE INTENT TO ESTABLISH A REBUTTABLE PRESUMPTION OF REASONABLENESS. THE EXECUTIVE DIRECTOR ALSO RELIES ON SIMILAR SALARY SURVEYS AS WELL AS PERFORMANCE APPRAISALS WHEN DETERMINING THE COMPENSATION OF OTHER KEY EMPLOYEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BYLAWS OF AAI ARE AVAILABLE ON THE AAI WEBSITE AND ARE PROVIDED IN HARD COPY AS REQUESTED. THE FORM 990 FINANCIAL STATEMENTS ARE ON THIRD-PARTY WEBSITES AND ARE PROVIDED IN HARD COPY AS REQUESTED. THE CONFLICT OF INTEREST STATEMENTS OF EACH AFFECTED MEMBER ARE NOT PUBLIC DOCUMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>