NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,811 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.

miRNA
A type of RNA found in cells and in blood. miRNA are smaller than many other types of RNA and can bind to messenger RNAs (mRNAs) to block them from making proteins. miRNA are being studied in the diagnosis and treatment of cancer. Also called microRNA.