Fig. 2.

Transforming growth factor-beta1 (TGF-β1) induces epithelial-mesenchymal transition (EMT) in papillary thyroid carcinoma (PTC) cells. (A) BCPAP cells are treated with different concentrations of TGF-β1 for 48 hours and (B) K1 cells for 24 hours. Western blot analysis of E-cadherin, N-cadherin, Vimentin, and Snail protein expression in PTC cells. β-Actin is used as a control. Statistical analysis is performed using the Student’s t test from three independent experiments repeated in triplicate, and error bars correspond to the standard error of the mean and P values are indicated in each panel. ^aP<0.05; ^bP<0.01 vs. control.