NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,863 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

carcinoembryonic antigen peptide-1
(KAR-sih-noh-EM-bree-AH-nik AN-tih-jen PEP-tide-1)
A small piece of a tumor marker called carcinoembryonic antigen (CEA). CEA may be found in the blood of people who have colon cancer, other types of cancer or diseases, or who smoke tobacco. Carcinoembryonic antigen peptide-1 is used to make a vaccine that may help stimulate the body’s immune system to kill cancer cells. Also called CAP-1 and CEA peptide-1.