Snail mediates the expression of E-cadherin and vimentin in OSCC cells. (A-B) The expression of Snail, E-cadherin, and vimentin in Snail-silenced CAL27 cells (A) and Snail-overexpressed CAL27 cells (B) was examined using western blotting and real-time PCR, respectively. *P < .05; **P < .01. (C-D) The expression of Snail, E-cadherin, and vimentin in Snail-silenced SCC15 cells (C) and Snail-overexpressed SCC15 cells (D) was examined using western blotting and real-time PCR, respectively. **P < .01.