Figure 3. Effects of RNF168 knockdown on the in vitro proliferation of esophageal cancer cells. (A) Western blot and (B) qPCR demonstrated that RNF168 was successfully knocked down in ECA-109 and EC9706 cells; (C, D) cell proliferation measured by the CCK-8 assay. Data are expressed as the mean ± SD of independent experiments. ** P<0.01.