Levels of SOD in lung tissues in control group, sepsis group, sepsis+SO2 group, and SO2 group were 156.0 ± 17.70 U/mg, 106.2 ± 5.25 U/mg, 165.9 ± 6.46 U/mg, and 157.0 ± 7.13 U/mg, respectively. This evidence concerns the gene SOD1 and Sepsis.