Western blot analysis of hypothalamic phospho-IKKβ levels in the hypothalamus of mice 4 h (C; n = 6 animals/group) or 7 days (D; n = 4 Veh; 5 AβOs) after i.c.v. injection of vehicle or 10 pmol AβOs. Graphs show densitometric data normalized by total IKKβ levels. In (D), *P = 0.0437; in (E), *P = 0.0444; Student's t-test. 