PATIENT CHARACTERISTICS: Age: Over 18 Performance status: ECOG 0-1 OR Karnofsky 70-100% Life expectancy: More than 1 year Hematopoietic: WBC at least 3,000/mm3 Hepatic: Bilirubin normal AST and ALT no greater than 2.5 times upper limit of normal Renal: Creatinine normal Cardiovascular: No symptomatic congestive heart failure No unstable angina pectoris No cardiac arrhythmia Other: Fertile patients must use effective contraception HIV negative No clinical immune dysfunction illness (e.g., rheumatoid arthritis) No ongoing or active infection No other concurrent uncontrolled illness that would preclude study No concurrent psychiatric illness or social situation that would preclude study