immunopositive fibers were traced to numerous structures within the brain including discrete regions of the hypothalamus , septal area , nucleus of the diagonal band , bed nucleus of stria terminalis , amygdala , thalamus , periaqueductal gray , raphe nuclei , brainstem reticular nuclei , locus ceruleus , parabrachial nucleus , dorsal motor nucleus of vagus , and the nucleus of the solitary tract , with a few fibers extending into spinal cord central gray .
C0006104
brain
C0034671
raphe nuclei