1985 Volume 76 Issue 6 Pages 445-448
On ingestion of fried ground beef by humans, the urinary mutagenicity, as examined by the Ames test, increased rapidly and then decreased during a period of 12hr to resume the original low level. The excreted mutagens were shown to differ from 2-amino-3, 8-dimethylimidazo [4, 5-f]quinoxaline, the major mutagen in the cooked beef.