Gut Microbes (IMAGE) Marine Biological Laboratory Caption This photograph shows an intestinal section from a gnotobiotic mouse model inoculated with selected human bacterial species. Blue=Bacteroides WH2, green=Bacteroides thetaiotamicron, pink=Bacteroides vulgatus, yellow=Collinsella aerofaciens, red=Ruminococcus torques. Credit Yuko Hasegawa, MBL Woods Hole Usage Restrictions Please use proper credit. 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.