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Effects of γ-rays and protons on 59M cell viability 7 days after irradiation, estimated by MTT (A) and SRB assays (B). Data obtained from 4 experiments are presented as means ± SD. Irradiation doses were 2–16 Gy
*Statistical significance compared to the control, #statistical significance compared to γ-rays; *,#0.01 < p < 0.05, *,##0.001 < p < 0.01, ***,###p < 0.001
