RT Journal Article SR Electronic T1 Tissue demonstration of carcinoembryonic antigen (CEA) in ulcerative colitis. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 561 OP 567 DO 10.1136/gut.17.7.561 VO 17 IS 7 A1 Isaacson, P YR 1976 UL http://gut.bmj.com/content/17/7/561.abstract AB An immunoperoxidase technique was used to demonstrate carcinoembryonic antigen (CEA) in sections of proctocolectomy specimens from nine cases of ulcerative colitis in some of which carcinoma and premalignant change had developed. Carcinoma and premalignant change stained positively for CEA in contrast with benign mucosa, whether or not inflammatory dysplasia was present.