Fig. 4From: Role of MMP-9 in epithelial-mesenchymal transition of thyroid cancerEffects of MMP-9 on the invasion of TC cells. a, b In TC cell lines, the invasion ability of TC cell lines induced by MMP-9 shRNA and TGF-β1 was observed (a is the photo, b shows the three statistical results). *Indicated P < 0.05 and ** indicated P < 0.01Back to article page