Splicing-regulated MRE of DNMT3B gene. (A) Putative hsa-miR-148 recognition sites in human DNMT3B coding region. Symbol “▲” indicated MRE#1 while “△” indicated MRE#2. (B) Relative numbers of MRE-containing and MRE-free transcripts from various MRE sites. (C) The negative log10 transformed P values in selected tissues. Asterisk represents statistical significance at P < 0.05, determined by Fisher exact test (left or right side).