Dr. Koen Martens (IMAGE) University of Bonn Caption Dr. Koen Martens from the Institute for Microbiology and Biotechnology at the University of Bonn working at the custom-built super-resolution fluorescence microscope that he uses for his investigations. Credit Photo: Volker Lannert/University of Bonn Usage Restrictions This image may be used together with the press release.) 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.