MiR-501 regulates HA cell proliferation, colony formation, migration, and invasion. (A) miR-501, (B) cell proliferation, (C) cell cycle distribution, (D) colony formation, (E) cell migration, and (F) cell invasion, and (G) MMP9 expression in cells transfected with the miR-501 inhibitor or NC-miR. (***P<0.001, **P<0.01) miR-501: microRNA-501; HAs: Hemangiomas; NC-miR: negative control miRNA; MMP9: matrix metalloprotein 9.