we studied the effect of unilateral sympathectomy on rat quadriceps and gastrocnemius muscle concentrations of endogenous dihydroxyphenylalanine ( dopa ) , dopamine ( da ) , and norepinephrine ( ne ) and assessed the relationships between these catecholamines in several rat tissues .
C0013023
dihydroxyphenylalanine
C0007412
catecholamines