A sensitive radioenzymatic assay for norepinephrine in tissues and plasma
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TL;DR
A procedure for measuring picogram quantities of norepinephrine has been developed utilizing partially purified bovine adrenal phenylethanolamine-N-methyl-transferase and 3 [H]-S-adenosyl-methionine, applicable to many body tissues and fluids, including brain and plasma.
Abstract
A procedure for measuring picogram quantities of norepinephrine has been developed utilizing partially purified bovine adrenal phenylethanolamine-N-methyl-transferase and 3[H]-S-adenosyl-methionine. The sensitivity of the assay is 25 pg, and the procedure is applicable to many body tissues and fluids, including brain and plasma.