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Survival curves for V79 cells exposed to four monoenergetic proton beams (LET: 7.7, 11.0, 17.8, and 27.6 keV/μm), as well as X-rays as a reference. The lines are simulation outcomes, the points are experimental data taken from the literature: (32) for X-rays, 7.7 keV/μm protons and 11.0 keV/μm protons; (34) for X-rays, 17.8 keV/μm protons, and 27.6 keV/μm protons.
