- Patients with persistent generalized lymphadenopathy (PGL), defined as lymph node enlargement greater than 1 cm in diameter at two or more noncontiguous extrainguinal sites, who in addition to this adenopathy have constitutional symptoms such as intermittent fever (> 38 degrees C for less than 15 days/month), sweats, malaise, and/or fatigue will also be eligible. This patient population has to have T4 cell counts = or < 500. Potential enrollees with PGL must have two screening lymphocyte subset determinations, at least 72 hours apart, within 3 months of entry that fall in the appropriate T4 range (200 - 500 cells/mm3). If an otherwise eligible subject has one screening T4 count in the appropriate range and one that is outside this range, a third screening count will determine eligibility.