The effect of vehicle (V), erythropoietin (E), and anakinra (A) in animals on liver protein expression. Abbreviations CYP2D4 cytochrome P450 2D6, CYP3A1 cytochrome P450 3A1, EPHX1 epoxide hydrolase 1, UGT2B7 UDP glucuronosyltransferases 2B7. CYP2D4: *p < 0.01 compared to EPO 24 h; CYP3A1: *p < 0.02 compared to EPO 7 days; EPHX1: *p < 0.05 compared to EPO 24 h