Laboratory values must be as follows and performed within 60 days of enrollment: a. WBC ≥ 1500/mm3 b. Hgb ≥ 8 g/dl c. Platelet count ≥ 75,000/mm3 d. Serum creatinine ≤ 2.0 mg/dl or creatinine clearance > 60 ml/min e. Total bilirubin ≤ 2.5 mg/dl f. SGOT ≤ 2.0 times the upper limit of normal 10. Patients must have recovered from major infe ctions and/or surgical procedures.