Human Immunodeficiency Virus Type 2
Human T Lymphotropic Virus Type IV
Human T-Lymphotropic Virus Type IV
Human immunodeficiency virus 2
Immunodeficiency Virus Type 2, Human
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.