of the entire brain , the medial septal-apoa region exhibits the highest frequency of ir-lhrh cell bodies in both sexes . ir-lhrh fiber projections are present in the olfactory bulbs , medial septal area , apoa , floor of the diencephalon , subhabenular-periventricular area in the epithalamus , lateral suprachiasmatic area , ventrolateral infundibulum , median eminence , pars nervosa , optic tectum , interpeduncular nucleus-tegmentum area , and rhombencephalon grey .
C0012144
diencephalon
C0152361
epithalamus