tyrosine hydroxylase and tryptophan hydroxylase activity was studied in different brain regions ( hemispheres , striatum , midbrain and brainstem in vivo by measuring the accumulation of dihydroxyphenylalanine ( dopa ) and 5-hydroxytryptophan ( 5-htp ) respectively , after inhibition of aromatic l-amino acid decarobyxlase with nsd 1015 .
C0025462
midbrain
C0006121
brainstem