title: Africa and the biology of human immunodeficiency virus.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000209:etiology* / Q000276:immunology; D000349:Africa; D006801:Humans; D007239:Infections / Q000453:epidemiology; D012882:Skin Tests; D013601:T-Lymphocytes / Q000145:classification