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Influence of a caffeine bolus after nonlethal injury. A 25 mg/kg caffeine bolus after sham (a), mild (b), or moderate (c) injury does not influence rotarod performance at 24 hours or 7 days after injury. (d) Rotarod performance after severe injury presented for reference. One-way ANOVA with Tukey's multiple comparison post-hoc test (**P < 0.01, ***P < 0.001, +++P < 0.0001 for significance).
