NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,800 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.

L-arginine
(… AR-jih-neen)
One of the twenty common amino acids (building blocks of proteins). L-arginine is being studied as a nutritional supplement in the treatment and prevention of cancer and other conditions. Also called arginine.