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Thickness of irradiated right ears of mice after hypofractionated X-ray irradiation with a total of 4 fractions given every 24 h. Doses of 0 Gy (black), 5 Gy (orange), 10 Gy (red), 20 Gy (blue) or 30 Gy (green) per fraction were used per fraction. The plot shows the mean values for every dose group comprising 6–7 mice. The thickness of the irradiated ears was monitored for 92 days after the first fraction. The errors are given as the standard errors of the mean (SEM).
