NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,916 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.

tumor infiltrating lymphocyte
(TOO-mer IN-fil-TRAY-ting LIM-foh-site)
A white blood cell that has left the bloodstream and migrated into a tumor.