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.

A substance that has been studied in the treatment of some types of cancer. ACN53 is a weakened adenovirus that carries the p53 gene into tumor cells, causing them to die. It is a type of gene therapy. Also called rAd/p53, recombinant adenovirus-p53, and SCH-58500.