Effect of systemic injections of PBS (control, n=8/group) and 5µg IL-1β (n=8/group) on NE concentrations (mean±SE;pg/µg protein) in the organum vasculosum lamina terminals (OVLT) (Fig 5A), diagonal band of Broca (DBB; Fig 5B), suprachiasmatic nucleus (SCN; Fig 5C),medial preoptic area (MPA; Fig 5D), and arcuate nucleus (AN; Fig 5E). ‘a’ indicates significant difference (p<0.05) from levels at 1 pm and ‘b’ indicates difference (p<0.05) from levels in control animals. Insets contain representative coronal sections of the brain depicting the location of individual nuclei.