Unexplained CD4 + T-lymphocyte depletion in persons without evident HIV infection--United States.
D000368:Aged; D015496:CD4-Positive T-Lymphocytes; D002487:Centers for Disease Control and Prevention, U.S.; D005260:Female; D006679:HIV Seropositivity / Q000097:blood*; D006801:Humans; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D014481:United States