Fig. 3
From: circRNA-miRNA-mRNA regulatory network in human lung cancer: an update
The whole view of the biogenesis and function of circRNAs. The biogenesis of three kinds of circRNA (EIciRNA, ecircRNA and ciRNA) and eight kinds of function, including circRNA-miRNA-mRNA axis, were presented in the picture. a RNAP II elongation. b Histone methylation. c Alternative splicing. d RNA maturation. e miRNA sponge. f Translation splicing. g Protein sponge. h Protein translation (including m6A-driven)