(A–F) Number of Fos-immunoreactive cells measured in selected brain areas of the accessory olfactory system in adult male mice. Individual data and means are shown. Animals were exposed for 4 min to a conspecific juvenile either with a preceding injection of anisomycin (ANI; 150 mg/kg body wt.; ANI + Juvenile, middle panels) or without (Juvenile, left panels), or exposure to an airstream containing carvone (right panels). “No stimulus” animals remained undisturbed (Juvenile), or received an ANI injection only (ANI + Juvenile), or received an airstream of room air for 4 min (control for Carvone). a, P < 0.01 vs. b and P < 0.05 vs. b′; ANOVA followed by Fisher's-LSD test. AOB, accessory olfactory bulb.
