<I>Tritrichomonas muris</I> (IMAGE) Rockefeller University Press Caption Researchers have discovered that the intestinal parasite Tritrichomonas muris (pictured) increases the susceptibility of its host to colitis. Credit Escalante et al., 2016 Usage Restrictions Reporters may freely use these materials in news coverage with the appropriate credit information. 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.