Figure 2: Serum BUN concentrations. LPS injection increased serum BUN concentration, while all doses of captopril decreased it. The data are shown as mean ± SEM. ***P <0.001 compared to the control, ++P <0.01 and +++P <0.001 compared to LPS. BUN: Blood urea nitrogen, LPS: Lipopolysaccharide, SEM: Standard error of the mean.