Invasion of hepatoma cells with or without integrin α6β1 mAbs and siHAb18G/CD147 treatment. (A-D) Matrigel invasion assay of FHCC98 (A, B) and 7721 (C, D) cells. Bars represent the mean of triplicate samples; error bars represent standard deviation. Data are representative of three independent experiments. ***P < 0.01 versus corresponding cells with no antibody treatment.