Mareike Klinger-Strobel Microscopes Biofilms (IMAGE) Friedrich-Schiller-Universitaet Jena Caption Mareike Klinger-Strobel microscopes biofilms stained with two fluorescent dyes. The biofilms were also treated with nanoparticles, which are blue-fluorescent by coupling to a special dye. It is easy to see that the nanoparticles penetrate into the biofilm because they can be found in the deep biofilm layers. Credit Photo: Anke Schleenvoigt/UKJ 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.