The expression of C5aR and C5L2 on neutrophils in sepsis patients. (a) The percentages of neutrophils, defined as CD66b-positive leukocytes in HC, SIRS and sepsis patients. (b) Representative dotplots show the expression of C5aR on CD66b-positive cells in patients and health controls. (c) The pooled data of the MFI of C5aR expression on CD66b-positive cells in HC, SIRS and sepsis patients. (d) Representative dotplots show the expression of C5L2 on CD66b-positive cells in patients and health controls. (e) The pooled data of the percentage of C5L2 expression in HC, SIRS and sepsis patients. (f) The pooled data of the MFI of C5L2 expression in HC, SIRS and sepsis patients. (g) Differential expression of C5L2 on CD66b-positive cells in blood and fluid from sepsis patients. Each dot represents an individual. *P<0.05; **P<0.01. C5aR, complement 5a receptor; HC, healthy control; MFI, mean fluorescence intensity; SIRS, systemic inflammatory response syndrome.