Figure 5. Effect of rIL-9 on IFN-γ production. The effect of recombinant human interleukin-9 (rIL-9; 100 ng/ml) on interferon (IFN)-γ
production by peripheral blood mononuclear cells (PBMCs) and CD4+ T cells from patients with active Vogt-Koyanagi-Harada (VKH)
(n = 14) disease, patients with inactive VKH disease (n = 14), and normal controls (n = 13). Cells were cultured with or without
rIL-9 in the presence of anti-CD3 and anti-CD28 antibodies for 3 days, and IFN-γ was measured with enzyme-linked immunosorbent
assays.