 - Use of immunomodulators, HIV vaccine, systemic cytotoxic chemotherapy, or investigational therapy within 30 days prior to study entry. Those using stable physiologic glucocorticoid doses, a short course of pharmacologic glucocorticoid, corticosteroids for acute therapy treating an opportunistic infection, inhaled or topical corticosteroids, or granulocyte-colony stimulating factor G-CSF or granulocyte-macrophage colony-stimulating factor GM-CSF will not be excluded. 