Reg3G in Mice (IMAGE) University of California - San Diego Caption Mice lacking REG3G had more bacteria (bright spots) in their gut linings. Credit UC San Diego Health Usage Restrictions Caption and photo credit as indicated. 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.