TRAIL receptor expression on neutrophils of SLE patients. Neutrophils from SLE patients with neutropenia showed significantly lower TRAIL receptor 3 expressions than those from SLE patients without neutropenia (*P < .01, Bonferroni/Dunn with one-way factorial ANOVA). (A) Representative data from 8 individual experiments. Dotted lines show the binding of an isotype control antibody to cells. Dotted line indicates IgG control intensity; solid line indicates TRAIL receptor expression intensity. (B) Data are shown with mean + standard deviations (n = 8 in each group).