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. 2021 Jul 16;8(4):159–168. doi: 10.1159/000517303

Fig. 1.

Fig. 1

Biogenesis and functions of circRNAs. CircRNA, circular RNA; miRNA, microRNA; EcRNA, exonic circular RNA; EIci­RNA, exon-intron circular RNA; ciRNA, intronic circular RNA; IRES, internal ribosome entry site; U1 snRNP, U1 small nuclear ribonucleoprotein particle; RNA POL II, RNA polymerase II.