RAEB: Human immunodeficiency virus. Species of LENTIVIRUS, subgenus primate lentiviruses (LENTIVIRUSES, PRIMATE), formerly designated T-cell lymphotropic virus type III/lymphadenopathy-associated virus (HTLV-III/LAV). It is acknowledged to be the agent responsible for the acute infectious manifestations, neurologic disorders, and immunologic abnormalities linked to the ACQUIRED IMMUNODEFICIENCY SYNDROME. (MSH99)
