a suppression of norepinephrine , epinephrine , and its metabolites in malignant pheochromocytoma by metyrosine was associated with an increase in tyrosine , plasma dopa , and sulfate esters of dopa and dopamine , followed , with continuing metyrosine administration , by a further rise of both dopa sulfate and dopamine sulfate .
C0028351
norepinephrine
C0014563
epinephrine