Fig. 2

FA induced morphological chang in Caski cells (a). The morphology of the Hela cells was examined using a phase contrast microscope after treatment with FA (b). Effect of FA on cell invasion in Hela and Caski cells. c MMP-9 mRNA expression in Hela and Caski cells; d the effect of FA (1.0, 2.0 and 4.0 mM) on cell invasion in Hela and Caski cells. *P < 0.05 indicates that there are significantly different compared with the control group; **P < 0.01