Figure 9.

Lesions of the IL cortex have no effect on FosB/ΔFosB expression in defeated mice previously housed in standard environments. No significant difference between groups was observed in the PL (a), PIR (c), or CG (d). Groups exposed to SD after SE housing showed a significant reduction in FosB/ΔFosB expression in the IL (b), Acb (e), and ITC (f) compared with non-defeated groups. FosB/ΔFosB immunostaining in the PVN (g) was significantly enhanced after SD, regardless of infusion treatment. IL, IL infusion. Results are expressed as mean ± SEM (n = 6 per group). Two-way ANOVA followed by Bonferroni's post hoc test. Bonferroni's test: *p < 0.05; **p < 0.01; ***p < 0.001.