ELUCIDATION OF THE RATE-LIMITING STEP IN NOREPINEPHRINE BIOSYNTHESIS IN THE PERFUSED GUINEA-PIG HEARTMorton Levitt, Sidney Udenfriend, Sydney Spector et al.|Journal of Pharmacology and Experimental Therapeutics|1965Cited by 1k
BLOCKADE OF ENDOGENOUS NOREPINEPHRINE SYNTHESIS BY ALPHA-METHYL-TYROSINE, AN INHIBITOR OF TYROSINE HYDROXYLASE.S. Spector, Sidney Udenfriend, Albert Sjoerdsma|PubMed|1965Cited by 813
INCREASED SYNTHESIS OF NOREPINEPHRINE AND EPINEPHRINE IN THE INTACT RAT DURING EXERCISE AND EXPOSURE TO COLD1Robert O. Gordon, Sidney Udenfriend, Sydney Spector et al.|Journal of Pharmacology and Experimental Therapeutics|1966Cited by 334