Fig. 3From: A novel feedback regulated loop of circRRM2-IGF2BP1-MYC promotes breast cancer metastasisThe characteristics of the four candidate circRNAs. A–D Schematic representation of the genomic localization of the four candidate circRNAs, the junction sites of back-splicing were verified by Sanger sequencing and the electrophoretogram of their PCR products by convergent and divergent primers. E–H The cellular localization of the four circRNAsBack to article page