Radiosensitivity and Induction of Apoptosis by High LET Carbon Ion Beam and Low LET Gamma Radiation: A Comparative Study

Figure 5

Caspase-3 activity in HeLa and HsiI cells irradiated with carbon ion beam and gamma radiation. Each histogram represents the mean of fold increase with respect to unirradiated control HeLa of 3 independent experiments with the standard deviations (vertical lines). The significance values were obtained in carbon ion beam compared with gamma radiation at a particular dose in each cell type and denoted as “*” (0.01<𝑃≤0.05).