title: [Research on human retroviruses: present status and future outlook].
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000276:immunology / Q000382:microbiology* / Q000635:transmission; D006800:Deltaretrovirus Infections / Q000276:immunology / Q000382:microbiology*; D006801:Humans; D013601:T-Lymphocytes / Q000276:immunology