Wound healing assay. SW480 and HCT-116 cells were transfected with miR-32 mimics and miR-32 inhibitor, respectively. Movement of cells into wound was shown for miR-32 mimics (A), and miR-32 inhibitor-transfected (B) cells at 0 and 36 h post scratch (40×). The arrows indicated the boundary lines of scratch. Cell migration was assessed by recover of the scratch. The area of the wound was measured at the two time points in every group, and % reduction of initial scratch area was compared. *P < 0.05, as compared miR-32 mimics or inhibitor with other two corresponding groups. (C) The results were expressed as fold change relative to the corresponding blank control. Data were the means of three measurements and the bars represented SD of the mean.