Antagonistic action of pyridoxine to toxopyrimidine on the growth of mice.

2-Methyl-6-amino-5-hyd roxymethylpyr imidine The basal diet consisted of, in per cent, purified starch, 60; purified casein, 20; lard, 15 and McCollum salt mixture (No. 185), 5. One drop of cod liver oil per day per animal was also administered. A vitamin mixture consisting of 1mg of thia mine hydrochloride, 0.4mg of ribo flavin, 0.1mg of pyridoxine hydro chloride, 3mg of calcium pantothen ate, 10mg of inositol, and 25mg of p-aminobenzoic acid was added to each 100g of the basal ration. The