1 Institute of Anatomy and Cell Biology, Paracelsus Medical University, Prof.-Ernst-Nathan Str. 1, 90419 Nuremberg and Salzburg, Nuremberg, Germany.
2 Department of Biosciences, Paris Lodron University Salzburg, Hellbrunnerstr. 34, 5020, Salzburg, Austria.
3 Institute of Biological Information Processing: IBI-2, Forschungszentrum Jülich, 52425, Jülich, Germany.
4 Department of Anatomy and Cell Biology, RWTH Aachen University, Wendlingweg 2, 52074, Aachen, Germany.
5 Institute of Anatomy and Cell Biology, Paracelsus Medical University, Prof.-Ernst-Nathan Str. 1, 90419 Nuremberg and Salzburg, Nuremberg, Germany. gundula.schulze@pmu.ac.at.