Fig. 7

Average number of cells with more than 2 γH2AX foci in astrocytes after single- and double-helical CT scan exposure. Data are shown in Fig. 6 but expressed as the number of cells with more than 2 γH2AX foci after single- (a) or double-helical (b) CT scan exposure. Each data represents the mean ± SEM of 3 independent experiments. CT Computed tomography, γH2AX Phosphorylated forms of the H2AX histone variant molecular, SEM Standard error of the mean