the reaction patterns of eight antibodies directed against blood group substances a , b , and h and against lewis b antigen , difucosylated carbohydrate antigens ( dfca ) , gastrointestinal cancer antigen ( gica ) ca 19-9 , carcinoma-associated antigen ca-50 , and carcinoembryonic antigen ( cea ) were studied in mucosa and adenomas of the rectum .
C0006613
antigen
C0003341
antigen ca