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A. The expression of Ki-67, p-P38, p-Akt, p-EGFR and the apoptotic cells in xenografts were examined by immunohistochemistry and TUNEL assay; original magnification 200×. B and C. The positive cells of the relevant factors and the apoptotic cells in xenografts were presented as mean ± SD; *p < 0.05, **p < 0.01 and ***p < 0.001 compared with the NT control group.
