Fig. 6

UA/OA inhibited MNNG-induced EMT. (a) Western blot analysis of N-cadherin, vimentin, and α-SMA protein expression levels. (b–d) Statistical analysis of the optical density bands of the western blots. **P < 0.01, *P < 0.05, compared with the control group; ##P < 0.01, ##P < 0.05, compared with two groups. UA, ursolic acid; OA, oleanolic acid; EMT, epithelial–mesenchymal transition; α-SMA, alpha-smooth muscle actin.