Medical Dictionary
RNA interference
noun
Medical Definition of RNA INTERFERENCE
: a posttranscriptional genetic mechanism of various eukaryotes (as plants, fungi, nematodes, and mammals) which suppresses gene expression and in which double-stranded RNA cleaved into small fragments initiates the degradation of a complementary messenger RNA; also : a technique (as the introduction of double-stranded RNA into an organism) that artificially induces RNA interference and is used for studying or regulating gene expression
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