1. Department of Pediatrics, Ludwig-Maximilians University, 80337 Munich, Germany, Department of Pharmaceutical Technology, Free University of Berlin, 12169 Berlin, Germany, Fraunhofer Institute for Applied Polymer Research, 14476 Potsdam-Golm, Germany, MPI for Biophysical Chemistry, 37077 Goettingen, Germany, Institute of Anatomy, University of Aarhus, 8000 Aarhus C, Denmark, Stereology and EM Research Laboratory, University of Aarhus, 8000 Aarhus C, Denmark, and Göttinger Zentrum für Molekulare Biologie,...