the reaction patterns of eight antibodies directed against blood group substances a , b and h , respectively , against lewis b antigen , difucosylated carbohydrate antigens ( dfca ) , gastrointestinal cancer antigen ca 19-9 ( gica ) , carcinoma-associated antigen ca-50 and cea , were studied in 68 rectal carcinomas using the avidin-biotin-peroxidase method .
C0006613
antigen ca 19-9
C0003341
antigen ca