microRNA

Definition / meaning of microRNA

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

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Find More About 'microRNA'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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