1. BIOSS Centre for Biological Signalling Studies, University of Freiburg, D-79104 Freiburg, Germany.
2. Department of Molecular Immunology, Institute of Biology III at the Faculty of Biology of the University of Freiburg, D-79104, and at the Max Planck Institute of Immunobiology and Epigenetics, D-79108 Freiburg, Germany.
3. Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
4. Institute of Immunology, Ulm University, D-89081 Ulm, Germany.
5. Institute of Computer Science, University of Freiburg, D-79110 Freiburg Germany.