in the brain stem a dense serotonergic innervation was observed in all of the motor nuclei of the cranial nerves , in two layers of the tectum mesencephali , in the nucleus interpeduncularis pars ventralis , the nucleus profundus mesencephali pars rostralis , the periventricular grey , the nucleus parabrachialis , the vestibular nuclear complex , the nucleus descendens nervi trigemini , the nucleus raphes inferior , and parts of the nucleus tractus solitarii .
C0006121
brain stem
C0034671
raphes