The effect of vehicle (V), erythropoietin (E), and anakinra (A) in TBI animals on cytokine plasma concentrations at 24 h, 72 h, and 7 days post-TBI. IFN-γ: *p = 0.01 compared to vehicle 24 h; IL-6: *p = 0.01 compared to sham, **p = 0.00 compared to vehicle 24 h, ***p = 0.03 compared to vehicle 72 h; IL-10: *p = 0.04 compared to vehicle 24 h; IL-13: *p = 0.03 compared to vehicle 24 h