1. Physical Chemistry and Centre for Soft Nanoscience (SoN) University of Münster, 48149 Münster, Germany
2. Interdisciplinary Center for Analytics on the Nanoscale (ICAN), University of Duisburg-Essen, 47057 Duisburg, Germany
3. Institute for Experimental Immunology and Imaging, Imaging Center Essen, Electron Microscopy Unit, University of Duisburg-Essen, 45147 Essen, Germany