1. Department of Structural Cell Biology of VirusesHeinrich‐Pette Institute—Leibniz‐Institute of Experimental Virology University of HamburgCentre for Structural Systems Biology Notkestraße 85 22607 Hamburg Germany
2. Electron Microscopy GroupGroningen Biomolecular Sciences and Biotechnology Institute University of Groningen Nijenborgh 7 9747 AG Groningen The Netherlands