food poisoning (IMAGE) UT Southwestern Medical Center Caption Scanning electron micrograph shows segmented filamentous bacteria attaching to the intestinal surface of a mouse. More bacteria attach during the night than during the day. Credit John F. Brooks II Usage Restrictions None License Original 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.