At 0, 4, and 8 hours, pancreatic tissue from C57BL/6, Il6–/–, and opt_sgp130Fc mice was isolated and homogenized to detect p-STAT3Y705, p-STAT3S727, p-RelA, IκBα, and IκBβ. ERK1/2 served as loading control (representative blot; n = 4 per time point).