Conversion of L-tyrosine to 3,4-dihydroxyphenylalanine by cell-free preparations of brain and sympathetically innervated tissues

A simple efficient liquid scintillator for counting aqueous solutions in a liquid scintillation counter

George A. Bray · Analytical Biochemistry · 1960 · 7.5K citations

Engineering, Chemistry, Analytical Chemistry +12

ASCORBIC ACID IN AROMATIC HYDROXYLATION

Sidney Udenfriend, Carroll T. Clark, Julius Axelrod et al. · Journal of Biological Chemistry · 1954 · 680 citations · Full text

Life Sciences, Biochemistry, Metabolism +3

The effects of alpha-methyl-DOPA and alpha-methyl-metatyrosine on the metabolism of norepinephrine and serotonin in vivo.

Sidney M. Hess, R.H. Connamacher, Masayori Ozaki et al. · PubMed · 1961 · 194 citations

Medicine, Pharmacology, Physiology +13

Precursors of adrenal epinephrine and norepinephrine in vivo

Sidney Udenfriend, James Β. Wyngaarden · Biochimica et Biophysica Acta · 1956 · 163 citations

Life Sciences, Biochemistry, Endocrinology +12

Norepinephrine and 3,4-Dihydroxy-Phenethylamine Turnover in Guinea Pig Brain in vivo

Sidney Udenfriend, Perola Zaltzman-Nirenberg · Science · 1963 · 101 citations

Life Sciences, Neurobiology, Pharmacology +16