A Thin Section of Marine Sponge (IMAGE) University of California - San Diego Caption A thin section of marine sponge is highlighted with red indicating the presence of cyanobacteria and algae living within the the sponge and blue and green areas revealed by MALDI-TOF MS imaging as areas of organic compounds detected by this approach. Credit UC San Diego 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.