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. 2021 Dec 13;9:802745. doi: 10.3389/fcell.2021.802745

FIGURE 1.

FIGURE 1

Function, biogenesis and localization of ncRNAs in cells. (A) lncRNAs are classified into various categories, including promoter-related lncRNAs, enhancer-related lncRNAs, intronic and exonic lncRNAs, antisense lncRNAs, and long intergenic lncRNAs; (B) The pre-miRNAs are loaded into the RNA-induced silencing complex (RISC) where the mature single-stranded miRNA binds to complementary mRNA targets after processed by Drosha complex and Dicer complex; (C) CircRNAs are classified into different types, including intron circRNAs, exon circRNAs, and extron-intron circRNAs.