title: WHO Working Group on Characterization of HIV-Related Retroviruses: criteria for characterization and proposal for a nomenclature system.
mesh_terms: D000818:Animals; D006678:HIV / Q000145:classification*; D000882:Haplorhini / Q000382:microbiology; D006801:Humans; D012190:Retroviridae / Q000145:classification* / Q000302:isolation & purification; D012703:Serotyping; D009626:Terminology as Topic; D014944:World Health Organization