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

Figure 4

Induction of apoptosis detected by nuclear fragmentation after irradiation with carbon ion beam and gamma radiation in HeLa and HsiI cells after 24 h incubation. Each bar represents mean % nuclear fragmentation with standard deviation in respective cell types. 𝑃 values at each dose of both carbon ion beam and gamma radiation for each cell type were calculated using 2-tailed paired-samples t-test and denoted by “*” (0.01<𝑃≤0.05), “**” (0.001<𝑃≤0.01), and “***” (𝑃≤0.001). 𝑃 values greater than 0.05 were left blank.