WT and TLR2−/− mice were subjected to sham or CLP surgical procedures. Twenty-four hours later, the peritoneal cells were harvested and analyzed for mitochondrial complex II/III activity by MitoTox™ OXPHOS Complex III Activity Kit. The numbers of animals in each group: WT- Sham, n = 7; WT-CLP, n = 16; TLR2KO-Sham, n = 3; TLR2KO-CLP, n = 7. ** P < 0.01, *** P < 0.001 versus sham. Each error bar represents mean ± SEM. WT = wild type; TLR2KO = TLR2 knockout; CLP = cecum ligation and puncture.