Fig. 9From: Apatinib preferentially inhibits PC9 gefitinib-resistant cancer cells by inducing cell cycle arrest and inhibiting VEGFR signaling pathwayEffects of apatinib on the expression of pVEGFR2 and CD31 in xenograft models. a Immunohistochemical staining for pVEGFR2 and b CD31 in tumor tissues obtained from the control and apatinib-treated mice. The bar plot value represents the mean ± standard deviation of at least three independent replicates. *p < 0.05, **p < 0.01 compared with control, using the t testBack to article page