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The impact of CLDN2 on the Ras/Raf/MEK/ERK signaling pathway of U2OS cells. a Western blotting was used to detect the activation of the Ras/Raf/MEK/ERK signaling pathway in U2OS cells. b The corresponding statistical analysis of the activation of the Ras/Raf/MEK/ERK signaling pathway. *P < 0.05, **P < 0.01 compared with the control group, compared with the vector group
