Cyanobacteria Glow (IMAGE) University of Colorado at Boulder Caption The cyanobacteria cells near the inside of this colony fluoresce more than those at its edges. Credit Kristin A. Moore and Jeffrey C. Cameron 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.