Ulcer-Causing Bacteria Baffled by Mucus 1 (IMAGE) Rensselaer Polytechnic Institute Caption Researchers at Rensselaer Polytechnic Institute have discovered how certain polymers -- like those found in human mucus and saliva -- make it significantly more difficult for ulcer-causing bacteria to coordinate. The findings raise many new questions about the relationship between the individual and group behaviors of bacteria. The study also suggests that human mucus, saliva, and other biological fluid barriers may have evolved to disrupt the ability of harmful bacteria to coordinate. Credit Rensselaer/Underhill Usage Restrictions Credit required 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.