miR-10b suppresses the invasion of A549 and H1299 cells. (A) A549 cells transfected with the miR-10b or inhibitor were subjected to Matrigel migration assays. The migrated cells were stained with crystal violet for 30 minutes. Scare bar = 100 μm. (B) A549 cells were counted and analyzed. Data shown are mean ± SD of triplicate measurements. *P <0.05. (C) H1299 cell migration assays were performed. Data shown are mean ± SD of triplicate measurements. *P <0.05. miR-10b, microRNA-10b.