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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PAGE 3, PART X</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION FOLLOWS THE AUTHORITATIVE GUIDANCE RELATING TO ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES INCLUDED IN ASC TOPIC INCOME TAXES. THESE PROVISIONS PROVIDE CONSISTENT GUIDANCE FOR THE ACCOUNTING UNCERTAINTY IN INCOME TAXES RECOGNIZED IN AN ENTITYS FINANCIAL STATEMENTS AND PRESCRIBE A THRESHOLD OF MORE LIKELY THAN NOT FOR RECOGNITION AND DERECOGNITION OF TAX POSITIONS TAKEN OR EXPECTED TO BE TAKEN IN A TAX RETURN. THE FOUNDATION PERFORMED AN EVALUATION OF UNCERTAIN TAX POSITIONS FOR THE YEARS ENDED DECEMBER 31, 2025 AND 2024, AND DETERMINED THAT THERE WERE NO MATTERS THAT WOULD REQUIRE RECOGNITION IN THE FINANCIAL STATEMENTS OR THAT MAY HAVE ANY EFFECT ON ITS TAX-EXEMPT STATUS.</ExplanationTxt>
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        <PersonNm>MARGARET MENTINK-KANE</PersonNm>
        <TitleTxt>CHIEF SCIENTIFIC OFF</TitleTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AMERICAN FOUNDATION FOR BIOLOGICAL RESEARCH (THE FOUNDATION) IS A NON- PROFIT ORGANIZATION INCORPORATED IN THE STATE OF ILLINOIS ON MARCH 16, 1948. THE BIOMEDICAL RESEARCH INSTITUTE WAS RECOGNIZED AS A TRADE NAME FOR THE FOUNDATION IN THE STATE OF MARYLAND IN MARCH 1994. THE FOUNDATION WAS ESTABLISHED WITH A MAJOR EMPHASIS ON CRYOBIOLOGY AND TROPICAL DISEASE RESEARCH. SCHISTOSOMIASIS, A MAJOR FOCUS AT THE FOUNDATION FOR MORE THAN 30 YEARS, IS A TROPICAL DISEASE THAT AFFECTS HUNDREDS OF MILLIONS OF PEOPLE IN SUB-SAHARAN AFRICA, PORTIONS OF SOUTH AMERICA AND PARTS OF RURAL ASIA. IN ADDITION TO BASIC SCHISTOSOMIASIS RESEARCH, THE FOUNDATION PROVIDES LIFE CYCLE STAGES OF SCHISTOSOMA PARASITES TO DOMESTIC AND INTERNATIONAL LABORATORIES, PRINCIPALLY THROUGH CONTRACTS WITH THE NATIONAL INSTITUTES OF HEALTH. THE FOUNDATION MAINTAINS THE FOLLOWING TWO MAJOR PROGRAM SERVICES: BIOREPOSITORY FACILITIES - THE FOUNDATION HOUSES A COLD STORAGE BIOSPECIMEN REPOSITORY WHICH SUPPORTS RESEARCH IN ACQUIRED IMMUNODEFICIENCY SYNDROME (AIDS) AND OTHER CLINICALLY IMPORTANT DISEASES. SCHISTOSOMIASIS RESOURCE CENTER - PARASITE REAGENT PRODUCTION AND DISTRIBUTION AS WELL AS EDUCATION AND TRAINING ARE FOCUSED ON THE MAJOR TROPICAL DISEASE OF SCHISTOSOMIASIS. THE FOUNDATION PROVIDES LIFE STAGES OF SCHISTOSOMA PARASITES TO SCIENTISTS IN THE DOMESTIC AND INTERNATIONAL RESEARCH COMMUNITY.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS REVIEWED BY MANAGEMENT AND THE BOARD OF DIRECTORS PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CONFLICT OF INTEREST POLICY COVERS ALL EMPLOYEES, BOARD OF DIRECTORS AND COMMITTEE MEMBERS, AND THE POLICY IS SIGNED IN AFFIRMATION OF RECEIPT AND UNDERSTANDING ON AN ANNUAL BASIS. IT IS THE DUTY OF EACH INDIVIDUAL TO BRING ANY ACTUAL OR POTENTIAL CONFLICTS OF INTEREST TO THE ATTENTION OF THE BOARD. THE INTERESTED PARTY IS PRECLUDED FROM VOTING ON THE MATTER, AND BUSINESS ARRANGEMENTS TO AVOID INUREMENT AND IMPERMISSIBLE PRIVATE BENEFITS.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS ARE AVAILABLE UPON REQUEST VIA PHONE. A COPY WILL BE MAILED TO THE REQUESTOR.</ExplanationTxt>
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    </IRS990ScheduleO>
  </ReturnData>
</Return>