 - Patients with active infections requiring intravenous antivirals, antibiotics, or antifungals; patients on prolonged antifungal therapy are still eligible if they are culture negative and biopsy negative in suspected residual radiographic lesions and they meet other organ function criteria; patients who are known HIV seropositive with stable disease and lack of major health problems who are not on anti-retroviral therapy, may be eligible at the discretion of the Study Chair 