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. 2015 Sep 28;5:14503. doi: 10.1038/srep14503

Figure 4. rh-Endo does not improve radiosensitivity of EC cell lines in vitro but does affect endothelial cells.

Figure 4

(a–c) rh-Endo did not inhibit the growth of ECA109 and TE13 cells at lower concentrations (200 μg/mL and below) but did inhibit the growth of HUVECs at these lower concentrations. *P < 0.05 vs. 0 μg/mL at the same time point; **P < 0.01 vs. 0 μg/mL at the same time point. (d–f) Flow cytometric analysis revealed that rh-Endo did not induce apoptosis of ECA109 cells and TE13 cells, but did affect the apoptosis of HUVECs. **P < 0.01. (g,h) Clonogenic assays showed that rh-Endo did not affect the radioresponsiveness of ESCC cells in vitro, whereas DDP improved the sensitivity to radiation.