ETBF Colons (IMAGE) Johns Hopkins Medicine Caption These are tumors in the colons of multiple intestinal neoplasia (Min) mice colonized with enterotoxigenic <i>Bacteroides fragilis</i> (ETBF) for 3 months compared to Min mice not colonized with ETBF. The colons are stained with methylene blue. Credit courtesy of Dr. Shaoguang Wu Usage Restrictions None 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.