title: Origin and spread of AIDS.
authors.forename: A
authors.initials: A
authors.lastname: Karpas
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000382:microbiology* / Q000635:transmission; D000349:Africa; D000818:Animals; D002520:Cercopithecidae; D005260:Female; D015497:HIV-1 / Q000235:genetics / Q000302:isolation & purification*; D015498:HIV-2 / Q000235:genetics / Q000302:isolation & purification*; D006801:Humans; D007564:Japan; D008297:Male; D009154:Mutation; D009664:Norway; D015302:Simian Immunodeficiency Virus / Q000302:isolation & purification; D006113:United Kingdom