Baseline plasma angiopoietin-2 and vascular endothelial growth factor across disease categories. (a) Baseline plasma angiopoietin-2. (b) Vascular endothelial growth factor. Solid circles represent individual sepsis subjects and solid triangles represent control subjects. Horizontal lines through the data points represent group median values. P values indicate pairwise comparisons between groups as indicated. NS, not significant; VEGF, vascular endothelial growth factor.