Research ArticleArticle
THE ABSORPTION, FATE AND EXCRETION IN RATS OF THE WATER-SOLUBLE AZO DYES, FD&C RED NO. 2, FD&C RED NO. 4, AND FD&C YELLOW NO. 6
J. L. Radomski and T. J. Mellinger
Journal of Pharmacology and Experimental Therapeutics May 1962, 136 (2) 259-266;