title: Anal sex and AIDS.
authors.forename: R J
authors.initials: RJ
authors.lastname: Naftalin
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000635:transmission*; D000818:Animals; D017364:Collagenases / Q000502:physiology; D005260:Female; D006801:Humans; D007413:Intestinal Mucosa / Q000502:physiology; D008297:Male; D051381:Rats; D012661:Semen / Q000737:chemistry; D012725:Sexual Behavior; D013096:Spermine / Q000502:physiology
chemical_list: D013096:Spermine; D017364:Collagenases