HIV-2

HIV-II; Human Immunodeficiency Virus Type 2; Human T Lymphotropic Virus Type IV; Immunodeficiency Virus Type 2, Human; SBL-6669
An HIV species related to HIV-1 but carrying different antigenic components and with differing nucleic acid composition. It shares serologic reactivity and sequence homology with the simian Lentivirus SIMIAN IMMUNODEFICIENCY VIRUS and infects only T4-lymphocytes expressing the CD4 phenotypic marker.