title: Absence of antibodies to human immunodeficiency virus in homosexual, hemophiliac, and heterosexual men in Budapest, Hungary in 1983-1984.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology* / Q000276:immunology; D000914:Antibodies, Viral / Q000032:analysis*; D001782:Blood Donors; D003587:Cytomegalovirus / Q000276:immunology; D003586:Cytomegalovirus Infections / Q000453:epidemiology; D006678:HIV / Q000276:immunology*; D015483:HIV Antibodies; D006467:Hemophilia A / Q000276:immunology*; D006566:Herpesviridae Infections / Q000453:epidemiology; D004854:Herpesvirus 4, Human / Q000276:immunology; D006716:Homosexuality; D006801:Humans; D006814:Hungary; D008297:Male; D012189:Retrospective Studies; D012749:Sexually Transmitted Diseases / Q000453:epidemiology
chemical_list: D000914:Antibodies, Viral; D015483:HIV Antibodies