miR-125b inhibits the proliferation of VSMCs. (A) Cell Counting Kit-8 assay indicated that transfection with miR-125b mimic decreased the OD value at a wavelength of 450 nm, which is approximately half of the NC group. (B) The BrdU assay demonstrated that transfection with miR-125b mimic significantly inhibited the OD value at day 4. Data are presented as the mean ± standard deviation. Paired Students' t-test was used. ***P<0.001. miR, microRNA; VSMCs, vascular smooth muscle cells; OD, optical density; NC, negative control; OD, optical density; NC, negative control.