Comparisons of IL-17A, IL-17F, IL-21, and IL-22 between Behçet (BD) patients and healthy controls. Mean levels of IL-17A (A and B), IL-17F (C and D), IL-21 (E and F), and IL-22 (G and H) produced by PBMCs in the BD-recurrent uveitis group (black bars) and BD-remitted uveitis group (gray bars) before (A, C, E and G) and after infliximab infusion (B, D, F and H), compared with cytokine production in the healthy control group (white bars). PBMCs were stimulated with IRBP at concentrations of 0, 5, and 10 μg/mL. The line above each bar shows standard deviation. *p<0.05 by Steel-Dwass non-parametric multiple comparison test.