Semen banking, organ and tissue transplantation, and HIV antibody testing.
D003141:Communicable Diseases / Q000453:epidemiology*; D004813:Epidemiology; D006679:HIV Seropositivity / Q000175:diagnosis*; D006801:Humans; D012042:Registries; D012662:Semen Preservation / Q000592:standards*; D014183:Transplantation, Heterologous; D014481:United States