Figure 1.
Sex differences in spontaneous neutrophil apoptosis. Neutrophils (1 × 106 cells/mL) were isolated from healthy male (n = 26) and female (n = 26) volunteers and incubated in vitro for 24 hours. Percentage neutrophil apoptosis was evaluated by propidium iodide DNA staining and flow cytometry. *P < .05 versus men. Error bars indicate mean ± SD.