Objective To explore a new biotherapy of bladder carcinoma.Methods Soluble cancer antigen(SCA) was extracted from bladder carcinoma by salting out method.Perpheral blood mononuclear cell(PBMC) were co stimuated by SCA and BCG to produce cytotoxic T lymphocytes(CTL) and cytotoxcity in vitro was evaluated by MTT method,the growth inhibitory on transplantation tumors in nude mice was observed.Results Cytotoxcity of CTL for bladder carcinoma and ovarian carcinoma cells was (96.3±1.4)% and (14.2±1.9)% respec...