title: Infectivity of the human immunodeficiency virus: estimates from a prospective study of homosexual men.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000635:transmission*; D000328:Adult; D000914:Antibodies, Viral / Q000032:analysis; D006678:HIV / Q000472:pathogenicity; D015483:HIV Antibodies; D006716:Homosexuality; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D011446:Prospective Studies; D012725:Sexual Behavior
chemical_list: D000914:Antibodies, Viral; D015483:HIV Antibodies