Fig. 3.

γH2AX foci in fibroblasts after single- and double-helical CT scan exposure. a Kinetics of γH2AX foci in fibroblasts after a single helical head CT scan, or (b) a double-helical head CT scan at the indicated times after exposure (t0 = non irradiated). Each data represents the mean ± SEM of 3 independent experiments. The asterisks shown at the non-irradiated conditions and at 10 min and 1 h post-irradiation times correspond to a statistically significant difference with the radioresistant control 200CLB (p < 0.05). The asterisks shown at 24 h post-irradiation correspond to a statistically significant difference with the non-irradiated conditions for the same cell lines. CT Computed tomography, γH2AX Phosphorylated forms of the H2AX histone variant, SEM Standard error of the mean