… Subsequently, researchers ascertained the structure(s) of many parasitic and mammalian
GPls (for re views, see 18-25). Today, it is recognized that GPI linkage is a fairly common …

Ultrastructural and biochemical observations in hepatic fibrosis have been reviewed. Recent
advances in our knowledge of collage metabolism have helped in understanding the …

Collagen, a most important component of animal connective tissue, comprises about one-third
of body protein. It is not only the most abundant, but one of the most unusual animal …

Fluorescamine is a new reagent for the detection of primary amines in the picomole range.
Its reaction with amines is almost instantaneous at room temperature in aqueous media. The …

… S~eczjGty-Of the compounds tested only L-tyrosine was found to serve as a substrate (Table
VII). Tyrosine, tyramine, and m-tyrosine were assayed by using radioactive substrates and …

Guinea-pig hearts were perfused with varying concentrations of the norepinephrine
precursors, tyrosine, 3,4-dihydroxyphenylalanine (dopa) and 3,4-dihydroxyphenethylamine (…

… Measurement of the fluorescence of this derivative endows the procedure of Udenfriend
and Cooper’ with greater sensitivity and specificity than was obtained in their original …

… Olga Katz and Miss Aliza Udenfriend. A most important role was played by my secretary
at the NIH, Mrs. Bonnie Chambers, who kept track of the reprints, reproductions, and …

The oxidation of hydroxyproline by chloramine T is standardised by the addition of a
measured excess of alanine. The specificity of the method is improved by extraction with …

… Tryptophan-S-hydroxylase. Concurrent investigations with a tryptophanhydroxylating
enzyme from mouse mast cells have shown that an analogous migration occurs during the …