Biology -- Lurking Mouth Microbes (IMAGE) DOE/Oak Ridge National Laboratory Caption ORNL's Karissa Cross prepares a sample to cultivate Desulfobulbus oralis, a novel oral microbe present in adults with advanced gum disease. Cross, a fourth-year Ph.D. candidate, led the lab's D. oralis study under ORNL's Mircea Podar's guidance. Credit Jason Richards/Oak Ridge National Laboratory, US Dept. of Energy 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.