Bacteroides vulgatus graphic (IMAGE) University of California - San Diego Caption The presence of Bacteroides vulgatus led to colitis in the mouse colon (left). However, protease inhibition protected the walls of the colon and reduced influx of inflammatory cells (right). Credit UC San Diego Health Sciences Usage Restrictions Use photo credit and caption as shown 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.