Fig. 3

Survival curves after NU7026 and radiation exposure and sensitization ratio of NU7026 for human H1299 cells. C ion irradiation dose-dependent changes (a) and the x-rays (b) when treated or not treated with 5–20 μM NU7026. NU7026 concentration-dependent sensitization ratio values to C ion and x-ray irradiations (c). The presented results are the mean and SD of three independent experiments. Data were statistically evaluated with student’s t test with comparisons between irradiation alone and other treated groups (* p < 0.05; ** p < 0.01; *** p < 0.001)