抄録
Studies were made on the effects of riboflavin and vitamin B_6 upon the disorder of tryptophan metabolism of the fevered rats caused by Streptococcus pyogenes J.17 A.4 and 2,4-dinitrophenol. When tryptophan had been administered, the fevered rats excreted a higher amount of xanthurenic acid especially by 2-4-dinitrophenol and pyridoxal phosphate caused a considerable decrease of xanthurenic acid. No other remarkable change was found except a slight decreasing tendency in the excretion of kynurenine by the 2,4-dinitrophenol injected rats.
