 IMMUNOSUPPRESSION: Patients receive cyclosporine IV or orally PO 2 to 3 times daily on days -3 to 99 with taper beginning on day 100 and continuing until day 177 in the absence of graft-vs-host disease GVHD. Beginning within 6 hours after transplantation, patients also receive mycophenolate mofetil IV or PO 3 times daily on days 0 to 40 followed by a taper in the absence of GVHD. 