EM Image of Pseudomonas Phage Pf (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Electron microscopy (EM) image of Pseudomonas phage Pf, an inovirus infecting Pseudomonas hosts. Inovirus capsids are long flexible filaments visible here after sample concentration and precipitation. The image is related to a Nature Microbiology paper released July 22, 2019, by a team led by Simon Roux, a research scientist at the US Department of Energy Joint Genome Institute. Credit J. Driver and P. Secor, University of Montana 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.