Fig. 6From: Effect of water-immersion restraint stress on tryptophan catabolism through the kynurenine pathway in rat tissuesInterferon gamma (IFN-γ), tumor necrosis factor alpha (TNF-α), and interleukin 1beta (IL-1β) levels in serum and liver tissues of rats subjected (+) or not (−) to 6 h of WIRS based on assays described in the Materials and methods. Each value is the mean ± SD (n = 7 −WIRS rats; n = 8 +WIRS rats). *P < 0.05 (vs. −WIRS rats)Back to article page