Fig. 8.

pATM foci in astrocytes after single and double-helical CT-scan exposure. a Kinetics of pATM foci in astrocytes 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 foci per cell of three independent experiments. Asterisks for time 10 min correspond to a statistically significant difference between HA-h and the other cell lines. CT Computed tomography, γH2AX Phosphorylated forms of the H2AX histone variant, pATM Phosphorylated forms of the ATM protein, SEM Standard error of the mean