(A) Analysis of RelB expression in astrocytes of WT and RelBΔAST mice. (B) Analysis of RelB protein expression in the brains 24h post intraperitoneal injection of PBS or 5 mg/kg LPS. (A-B) Representative blots of two experiments are shown. (C) RelB protein was visualized by IF in the cortex of WT mice 24h post intraperitoneal injection of 5 mg/kg LPS. Anti-GFAP antibody was used to co-stain astrocytes, and Hoescht to visualize nuclei. Quantification of RelB+GFAP+ cells as a percentage of all GFAP+ cells is shown in lower panel (n=7). (D) Expression of mRNAs in the brains of mice receiving PBS or 5 mg/kg LPS (n=6, 11, 6, 12, respectively). (E) Expression of mRNAs in the brains of mice receiving two doses of 2 mg/kg LPS one week apart (right panel). qPCR analysis of mRNA from two independent experiment (n=4, 7, 3, 8, 3, 6, 3, 7, respectively). Error bars represent s.e.m., * P<0.05 (two-way ANOVA, Sidak’s test).