... endotoxin tolerant. To test this hypothesis, in this study, we examined the expression of an array of cytokines, chemokines, and their receptors in the serum, spleen, and brain of an endotoxin ... levels) of the cytokines/chemokines measured in the serum in the two strains of animals (Table 1). In the F344 serum, the levels of the pro-inflammatory cytokine, IFN-γ, and the anti-inflammatory ... extent in the SS+L and LL+L groups of the spleen of the HIV-1Tg rats in comparison to the F344 rats. Cxcl1 and Cxcl2 levels were elevated to a lesser extent in the spleen of the SS+L and LL+L...