Figure 5
Radiosensitization effect of ICp6-Cu in oral cancer cells determined by clonogenic assay. (a) Surviving fraction and (b) sensitivity enhancement ratio (SER) in NT8e and 4451. The cells were treated with ICp6-Cu (10, 20 and 30 µM) for 3 h and then irradiated with X-rays at a fixed dose of 7.0 Gy. *(p < 0.05) and **(p < 0.01) indicate significant difference. Data are mean ± standard deviation of three independent experiments. |