CASP9 and Sepsis: We firstly observed that the fluorescence of caspase-3/9 decreased in sepsis + miR-21 mimic group, while the fluorescence of caspase-3/9 increased in sepsis + miR-21 inhibitor group [t value (caspase-3: NC versus SP) = 25.960, p < 0.01; t value (caspase-3: miR-21 mimic versus SP) = 10.874, p < 0.01; t value (caspase-3: miR-21 inhibitor versus SP) = 5.934, p < 0.01; t value (caspase-9: NC versus SP) = 13.300, p < 0.01; t value (caspase-9: miR-21 mimic versus SP) = 3.711, p < 0.01; t value (caspase-9: miR-21 inhibitor versus SP) = 12.930, p < 0.01] (Figures 7(a)–7(d)).