Luminous Microbial Beads (IMAGE) The Hebrew University of Jerusalem Caption These luminous microbial beads demonstrate the fluorescent signal produced by the bacteria Credit (Credit: Hebrew University) Usage Restrictions Please include photo credit 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.