抄録
Riboflavin has an important relation to liver tumors in rats fed on amino-azo dyes. Eight kinds of water soluble azo-dyes were selected out of the edible pigments on the market. After they were administrated in large amount to rats, the conversion of the amount of riboflavin in several organs were observed. It was found that the amount of riboflavin in the liver and brain showed a remarkable decrease and that in the muscle and spleen only a slight decrease, while hardly any change was recognized in the kidney and heart.
