Human T Lymphocytotropic Virus. A family of viruses that invade T lymphocytes. HTLV-1 produces a disease called adult T cell leukemia or lymphoma primarily in Southern Japan and the Caribbean . HTLV-3 has been renamed the human immunodeficiency virus and is the cause of acquired immunodeficiency disease.

Human T-cell Leukaemia Virus type

An oncogenic retrovirus. One type, HTLV-I, causes adult T-cell leukemia. HTLV-III was one of the original names for HIV-1, as proposed by Robert Gallo.