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The migration and invasion of NPC-TW01 cells transfected with β-catenin (A) siRNA or (B) overexpression plasmids. NPC-TW01 cells in siR-NC and siR-CLDN1 groups were transfected with siR-NC and siR-β-catenin (rescue group), respectively. NPC-TW01 cells in the NC and CLDN1 groups were transfected with pcDNA3.1-NC and pcDNA3.1-β-catenin (rescue group), respectively. Magnification, 100×. *P<0.05 vs. the respective NC. si, small interfering; CLDN1, claudin-1; NC negative control.
