Effects of overexpression of miR-29b in BGC823 and MGC803 cells on cell migration. For wound-healing assay, BGC823 or MGC803 cells were seeded and transfected with pLV-MIR29b or the control plasmid. 24, 48 or 72 hours after the transfection, wound healing was recorded in photographs. For the transwell migration assay, approximately 2.5 × 104 transfected cells were plated in the upper chamber for transwell assay and the rest of the cells were collected for Western blot analysis. Data are expressed as the mean ± SEM (n = 3). ***, p < 0.001. (A and B) Overexpression of miR-29b significantly suppressed BGC823 and MGC803 cell migration as determined in a wound-healing assay. (C and D) Overexpression of miR-29b significantly suppressed cell migration as determined in a transwell assay.