C3 and acute respiratory distress syndrome: Interestingly, the GGT activities as well as C3 and hs-CRP levels reached 60.44 ± 1.37 U/L, 142.55 ± 3.26 mg/dL, and 3.39 ± 0.15 ng/L of that in H-PLE groups, with the decreasing rates of 53.74%, 45.93% and 70.95% comparing to that in the MC groups (130.65 ± 2.01 U/L, 263.66 ± 3.64 mg/dL and 11.67 ± 0.27 ng/dL), indicating PLE could significantly recover pulmonic characteristic of ALI.