positive immunoperoxidase studies were as follows : keratin ( 13 cases ) , epithelial membrane antigen ( ema ) ( 13 cases ) , leukocyte common antigen ( none ) , carcinoembryonic antigen ( cea ) ( five cases ) , b72.3 ( seven cases ) , leu 7 ( two cases ) , human placental alkaline phosphatase ( none ) , vimentin ( none ) , and chromogranin ( one case ) .
C0007082
carcinoembryonic antigen
C0086418
human