PATIENT CHARACTERISTICS: Age: 18 and over Menopausal status: Premenopausal or postmenopausal Performance status: Karnofsky 90-100% Life expectancy: Not specified Hematopoietic: Lymphocyte count at least 500/mm3 WBC count at least 3,000/mm3 Hepatic: Aspartate aminotransferase no greater than 1.5 times upper limit of normal (ULN) Alkaline phosphatase no greater than 1.5 times ULN Renal: Creatinine no greater than 1.5 times ULN Cardiovascular: No New York Heart Association class III or IV cardiac disease Other: Not pregnant or nursing Negative pregnancy test Fertile patients must use effective contraception No other concurrent active cancers except basal cell or squamous cell carcinomas of the skin No history of a seafood allergy No known history of immunodeficiency or autoimmune disease