Representative film autoradiographs at the levels of the SFO (A, C, E) andPVN (B, D, F) show patterns of IκBα mRNA hybridization in animals killed at 2 hr after they received an intraperitoneal injection of 100 μg/kg LPS (LPS; A, B), in animals killed at 2 hr after they were injected with 100 μg/kg LPS + 10 mg/kg DEX (LPS+D10; C, D), and in animals killed at 2 hr after they were injected with 100 μg/kg LPS + 50 mg/kg DEX (LPS+D50; E, F). Scale bar, 0.5 cm.