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A: Survival curves in 10 XPA−/−p53−/− (□), 28 XPA−/−p53+/− (▪), 20 XPA−/−p53+/+ (⊚), 20 p53−/− (○), and 30 p53+/− (▵) mice. B: Tongue tumor incidence in 22 XPA−/−p53+/− (▪), 20 XPA−/−p53+/+ (⊚), and 20 p53+/− (▵) mice. Points represent mice that had tongue tumors visible to the naked eye.
