for the in vivo assay , both the accumulation of dopa ( tyrosine hydroxylase activity ) and that of 5-hydroxytryptophan ( tryptophan hydroxylase activity ) and the levels of monoamines and the metabolites ( noradrenalin , adrenalin , dopamine , normetanephrine , 3-methoxytyramine and serotonin ) and those of precursor amino acids , tyrosine and tryptophan , were investigated in ten different brain regions and in adrenals .
C0028351
noradrenalin
C0028385
normetanephrine