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Effects of AA on Snail, E-cadherin, N-cadherin and vimentin protein expression in TGF-β1-treated A549 cells, as assessed by western blotting. (A) Representative images. (B) Semi-quantitative analysis of (A). *P<0.05. AA, asiatic acid; Snail, snail family transcriptional repressor; TGF-β1, transforming growth factor-β1.
