Blood group H antigen in transitional carcinoma of the urinary bladder.

A total of 21 transitional carcinomas of the urinary bladder were examined by the method of indirect immunoperoxidase reaction using anti-H monoclonal antibody. Expression of blood group H antigen was detected in ten cases but no association with the grade of differentiation of the tumor tissue was established. The prognosis of carcinomas expressing blood group H antigen is not more favorable than that of carcinomas with absent expression.