Effects of corticosterone (Cort, 500 μg kg−1, i.p.) and/or interleukin 1β (IL-1β, 500 μg kg−1, i.p.) on the plasma ACTH (a), serum GH (b) and serum LH (c) concentrations in rats pretreated 15 min before the steroid injection with anti-annexin 1 pAb (3 μl rat−1, i.c.v.) or an equal volume of non-immune sheep serum (NSS, i.c.v.). Sal=saline. Values represent the mean±s.e.mean (n=6 – 7). **P<0.01 vs Sal-Sal-treated control. ††P<0.01, vs corresponding Sal-IL-1β-treated group; N.S.=not significant (P>0.05), (ANOVA plus Scheffé's test).