More ado about HIV's origins.
Wain-Hobson
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D000818:Animals; D002163:Cameroon; D015658:HIV Infections / Q000821:virology*; D015497:HIV-1 / Q000145:classification / Q000235:genetics* / Q000276:immunology / Q000302:isolation & purification; D006801:Humans; D015302:Simian Immunodeficiency Virus / Q000235:genetics / Q000276:immunology