A glycoprotein that is secreted into the luminal surface of the epithelia in the gastrointestinal tract. It is found in the feces and pancreaticobiliary secretions and is used to monitor the response to colon cancer treatment.

Synonyms: 0, Antigen, CD66e, Carcinoembryonic Antigen, CD66e Antigens, CD66e Antigen, Antigens, CD66e, Antigen, Carcinoembryonic