Hepatic Riboflavin and Tumor Formation in Rats Fed Azo Dyes in Various Diets^*

Published with the approval of the Director of the Wisconsin Agricultural Experiment Station. Supported in part by the Jonathan Bowman Cancer Fund and by a grant from the Committee on Growth, American Cancer Society. We are indebted to Dr. B. J. Grondal of Lever Brothers, Cambridge, Massachusetts, for the hydrogenated coconut oil used.