Comparison of serum levels of C3, C4, C5b9 and hs-CRP between the NSTEMI and STEMI subgroups and the control group. (A) Quantitative analysis data reveal that serum complement and hs-CRP levels of patients with STEMI and NSTEMI at day 3 were significantly higher than that of patients with NSTEMI and the control subjects. (B) Quantification of the serum C3 level. The serum C3 level of patients with STEMI and NSTEMI at day 3 was significantly higher than that of patients with NSTEMI and the control subjects. (C) Serum C4 levels of patients with STEMI and NSTEMI was measured at different time-points. The serum C4 level of patients with STEMI at day 3 was significantly higher than that of patients with NSTEMI and the control subjects. (D) ELISA detection of the C5b9 level of patients with STEMI and NSTEMI in the serum samples at days 1, 3 and 7. Data are expressed as mean ± standard deviation. *P<0.05 vs. control, #P<0.05 vs. NSTEMI. AMI, acute myocardial infarction; STEMI, ST segment elevation MI; NSTEMI, non-ST segment elevation MI; hs-CRP, high-sensitivity C-reactive protein.