dopamine-containing cells were found around the glomeruli of the olfactory bulb , in several parts of the periventricular hypothalamic nucleus , in the periventricular organ , the ependymal wall of the infundibular recess , the lateral hypothalamic area and the pretectal posterodorsal nucleus of the diencephalon , and in the ventral tegmental area , the substantia nigra , and the presumed reptilian equivalent of the mammalian a8 cell group of the mesencephalon .
C0038590
substantia nigra
C0025462
mesencephalon