Fig. 2From: Biology of high single doses of IORT: RBE, 5 R’s, and other biological aspectsSublinear dose response for the mean number of γH2AX foci per cell (V79) at maximum induction and after 4 h repair (30 min and 240 min post-irradiation, respectively) (a). Reduced colony size of V79 cells irradiated 14.3 Gy but not 5.7 Gy (10 MeV electrons, 20 mm water-equivalent depth) (b)Back to article page