Figure 1 Effects of 5-fluorouracil (5-FU) and galangin on the proliferation of normal human esophageal cells and malignant cells. Het-1A, Eca109, and OE19 cells were incubated with different concentrations of 5-FU (A), galangin (B), and combined therapy (C) for 48–72 h, and the absorbance by CCK-8 assay was calculated compared with the control group independently. Data are shown as the mean±SEM of 3 independent experiments. * P<0.05 vs control group, ** P<0.01 vs control group for 48 h; # P<0.05 vs control group, ## P<0.01 vs control group for 72 h.