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.

9-cis retinoic acid
(... REH-tih-NOH-ik A-sid)
A substance being studied in the prevention of cancer. It is a type of retinoid.