title: [Riddle of HIV-1 origin solved].
authors.forename: R
authors.initials: R
authors.lastname: Volkert
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000635:transmission; D000818:Animals; D015497:HIV-1 / Q000302:isolation & purification; D006801:Humans; D002679:Pan troglodytes / Q000821:virology*; D015302:Simian Immunodeficiency Virus / Q000302:isolation & purification