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Effects of PPE on the invasion of bladder cancer cells. (A and B) T24 cells; (C and D) 5637 cells. Representative images of T24 and 5637 invasion were captured at ×100 magnification. Experiments were conducted in triplicate. NS, not significant; **P<0.01; ***P<0.001. PPE, ethanol extracts of Paris polyphylla.
