Effect of H
S on the activity of SOD in lung mitochondria in rats. Compared with control group, the activities of SOD were significantly decreased (P < 0.01) in lung mitochondria in LPS injury group. Compared with LPS injury group, the activities of SOD were significantly increased in LPS + low, middle and high dose NaHS groups (P < 0.05 or P < 0.01). **P < 0.01 vs control; #P < 0.05, ##P < 0.01 vs LPS.control: control group. LPS: LPS injury group.LPS+ NaHS L: LPS + low-dose NaHS group.LPS+ NaHS M: LPS + middle-dose NaHS group.LPS+ NaHS H: LPS + high-dose NaHS group.