NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,777 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.

CAP-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. CAP-1 is used to make a vaccine that may help stimulate the body’s immune system to kill cancer cells. Also called carcinoembryonic antigen peptide-1 and CEA peptide-1.