in most of the brain areas examined , except the serotonergic dorsal nucleus of raphe , the noradrenergic locus coeruleus and the dorsal efferent nucleus of vagus , tyrosine hydroxylase-positive neurons were in greater number than monoamine oxidase-a-stained or monoamine oxidase-b-stained neurons .
C0006104
brain
C0023951
locus coeruleus