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目的 microRNA(miRNAs)aresingle-stranded,smallnon-codingRNAsthatplayanimportantroleintranscriptionalandposttranscriptionalregulationofgeneexpression.Recently,miRNAswerefoundtotransferfromadonorcellintoatargetcellortissueeffectivelyviaextracellularvesicles.