following the administration of the monoamine oxidase inhibitor , pargyline , turnover rates of the biogenic amines norepinephrine ( ne ) , dopamine ( da ) and serotonin ( 5ht ) were determined in discrete brainstem nuclei : substantia nigra ( sn-a9 ) , dorsal raphe ( dr ) , nucleus gigantocellularis ( rgi ) , locus coeruleus ( lc-a6 ) , nucleus ambiguus ( n amb ) and nucleus tractus solitarius ( nts ) of young and adult rabbits .
C0006121
brainstem
C0023951
locus coeruleus