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. Author manuscript; available in PMC: 2020 Oct 1.
Published in final edited form as: Radiother Oncol. 2019 Mar 5;139:51–55. doi: 10.1016/j.radonc.2019.02.009

Fig. 2: The effect of proton dose rate on DNA damage.

Fig. 2:

Fold change of γH2AX foci fluorescence intensity (normalized to controls) in normal human lung fibroblasts (IMR90) 30 minutes after exposure to different doses of 4.5 MeV protons delivered at 0.05, 100 or 1000 Gy/s.