Colorimetric Method for Estimation of Proteose-Peptone in Milk

Proteose peptone fraction of bovine milk depressed IgE production in vitro and in vivo.

Proteose peptone (PP) is a heat-stable and acid-soluble protein in milk whey. We reveal in this study the IgE production-suppressing activity of the PP fraction in bovine milk. The PP fraction suppressed IgE production by human myeloma cell line U266 cells by depressing the IgE mRNA expression. The suppressive activity of the PP fraction was facilitated by trypsin digestion. An oral administrat...

A Colorimetric Method for the Estimation of Sugar in Blood.

An improved colorimetric method for the quantitative estimation of thymine.

The Hunter (1) procedure was originally developed for the calorimetric d&&ion of minute amounts of thymine. In this procedure thymine is coupled under air with p-diazobenzenesulfonic acid in carbonate solut.ion, and a red color is subsequently produced by the addition of sodium hydroxide and hydroxylamine. Thymine was determined by this means in hydrolysates of dcsoxypentose nucleic acids (DNA)...

A Method for the Colorimetric Estimation of Carnosine.

A colorimetric method for the estimation of serum magnesium.

I955 The author wishes to express his sincere appreciation to Dr R. E. Hungate for an introduction to the fascinating cattle protozoa and for many stimulating discussions during the course of the experiments. The investigation was supported in part by funds for biological and medical research by the State of Washington, initiative measure number 171. In clinical work, where general electrolyte ...