PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-2 Life expectancy: At least 3 months Hematopoietic: Hemoglobin at least 10.0 g/dL WBC at least 3,000/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin no greater than 2 times upper limit of normal (ULN) SGPT/SGOT no greater than 3 times ULN Renal: Creatinine no greater than 2 times ULN Other: HIV negative No active systemic infection No other serious systemic medical conditions Positive delayed hypersensitivity reaction to at least one of the following antigens: tetanus, candida, mumps, or trichophyton Not pregnant Fertile patients must use effective contraception during and for 3 months after study