incubation in media containing l- [ ( 14 ) c ] tyrosine and l- [ ( 14 ) c ] tryptophan for 24 h , followed by high-voltage electrophoresis , radiochromatogram scanning , and scintillation counting , confirmed the presence of [ ( 14 ) c ] dopamine , [ ( 14 ) c ] norepinephrine , [ ( 14 ) c ] epinephrine , [ ( 14 ) c ] serotonin , [ ( 14 ) c ] tyramine , and [ ( 14 ) c ] octopamine .
C0028351
norepinephrine
C0014563
epinephrine