to reveal the cell-biological character of biliary tract cancer , localization and distribution of three cancer-associated carbohydrate antigens ( ca19-9 , sialyl ssea-1 , ncc-st-439 ) and carcinoembryonic antigen ( cea ) were studied immunohistochemically in 35 cases of gallbladder carcinoma , 21 of bile duct carcinoma , 16 of chronic cholecystitis , and 3 of normal gallbladder .
C0003341
cancer-associated carbohydrate antigens
C0006613
ca19-9