PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-2 Life expectancy: At least 3 months Hematopoietic: WBC at least 3,500/mm3 Lymphocyte count at least 500/mm3 Hepatic: Bilirubin no greater than 3 mg/dL Renal: Creatinine no greater than 2 times upper limit of normal OR Creatinine clearance at least 50 mL/min Other: No active infection requiring sytemic therapy No history of severe allergy or anaphylaxis No immunodeficiency (e.g., HIV infection, lupus, or myeloma) Not pregnant Negative pregnancy test Fertile patients must use effective contraception Women must use contraception for 3 months prior to, during and for 3 months after study Men must use contraception during and for 3 months after study