extraction and metabolism of [ 3h ] -norepinephrine ( ne ) and [ 3h ] epinephrine ( e ) by the respiratory ( efferent branchial ) and filamental ( venous ) vasculature of the trout gill were examined using an isolated perfused arch technique in which outflow from the two circulations was separated .
C0028351
norepinephrine
C0014563
epinephrine