Figure 2: Corticosterone (CORT) concentrations in rat plasma and hippocampus, immediately after CORT injection or immobilization stress for 21 days. The experimental groups were pretreated with nontreated normal (NOR, ), restraint-stressed (STR, ) and CORT-injected (CORT, ) rats. Data were analyzed using a one-way ANOVA followed by Tukey’s post hoc test. *, ** versus NOR group. Vertical bars indicate SE.