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The expression levels of epithelial-mesenchymal transition-associated proteins, including E-cadherin, N-cadherin, vimentin and Snail, were investigated by (A) reverse transcription-quantitative polymerase chain reaction and (B and C) western blot analysis. *P<0.05, **P<0.01. GAS5, growth arrest-specific transcript 5; NC, negative control.
