Food Additive Study Illustration (IMAGE) Georgia State University Caption This illustration shows bacteria that are present deeper in the mucus layer that lines the intestine and closer to the epithelium than they should be. Credit Don Morris Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.