NAU Researchers (IMAGE) Northern Arizona University Caption Jeff Leid, left, and Tim Vail at work in NAU's Center for Microbial Genetics and Genomics. Credit Photo by Jason Bullard 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.