Fluorescent Biofilm (IMAGE) University of Montreal Caption Fluorescence image of a Caulobacter biofilm. Live cells are labelled in green, dead ones in pink, and extracellular DNA release during cell death is shown in blue. Credit Cécile Berne, Université de Montréal Usage Restrictions Use with this research. License Original 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.