Figure 1. Upregulated ALK4 expression in peripheral blood mononuclear cells of AMI patients. Flow cytometry analysis of human peripheral blood mononuclear cells were showed. PBMCs were isolated from acute myocardial infarction patient (A) and healthy person (B). ALK4, CD16 and CD14 were detected (n=9, each group). (C) Bar graph presenting the number of ALK4(+) cells in CD16(+) or CD14(+) monocytes in healthy controls and AMI patients, p=0.0011. *P < 0.05 vs. healthy controls. AMI, acute myocardial infarction.