1. MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, U.K.
2. Department of Life Sciences, Imperial College London, London SW7 2AZ, U.K.
3. Department of Biophysical Imaging, Leibniz Institute of Photonic Technologies e.V., member of the Leibniz Centre for Photonics in Infection Research (LPI), Albert- Einstein Strasse 9, 07745 Jena, Germany
4. Institute of Applied Optics and Biophysics, Friedrich Schiller University Jena, Max-Wien Platz 1, 07743 Jena, Germany
5. Jena Center for Soft Matter (JCSM), Philosophenweg 7, 07743 Jena, Germany