Fruit Fly Gut (IMAGE) University of California - San Diego Caption A normal fruit fly gut revealing the regular structure of actin staining microvilli (green) and cell nuclei (blue). This organization in the fruit fly is very similar to that of the human intestine. A study published in iScience makes use of these close parallels in structure and function to identify new activities of a toxin produced by the problematic hospital pathogen <i>C. difficile</i>. Credit Bier Lab, UC San Diego Usage Restrictions Must be used in conjunction with C. difficile study. 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.