Figure 4. IL-6, sIL-6R, and sgp130 concentrations in patients with DR. Aqueous humor (AqH) concentrations were determined by using a multiplex bead-based immunoassay. A: Relationships between interleukin (IL)-6 and soluble gp130 (sgp130) are shown. B: Relationships between IL-6 and soluble IL-6R (sIL-6R) are shown. C: Relationships between sIL-6R and sgp130 are shown. Data were analyzed by using a Spearman’s rank correlation test.