Merrimack Pharmaceuticals Inc., Discovery Devision, Cambridge, MA 02139, USA.|University of Freiburg, Institute for Physics, 79104 Freiburg, Germany.|Humboldt-Universität zu Berlin, Theoretical Biophysics, 10115 Berlin, Germany.|University of Freiburg, Institute for Physics, 79104 Freiburg, Germany.|University of Freiburg, Institute for Physics, 79104 Freiburg, Germany.|University of Freiburg, Institute for Physics, 79104 Freiburg, Germany.|University of Freiburg, Institute for Physics, 79104 Freiburg, Germany.|University of Freiburg, Institute for Physics, 79104 Freiburg, Germany.|Systems Biology of Signal Transduction and.|University of Freiburg, Institute for Physics, 79104 Freiburg, Germany.|University of Freiburg, Institute for Physics, 79104 Freiburg, Germany.|Divison of Theoretical Systems Biology, German Cancer Research Center, 69120 Heidelberg, Germany, BioQuant, University of Heidelberg, 69120 Heidelberg, Germany.|Helmholtz Center Munich, Institute of Computational Biology, 85764 Neuherberg, Germany, Technische Universität München, Department of Mathematics, 85748 Garching, Germany and.|Systems Biology of Signal Transduction and.|Divison of Theoretical Systems Biology, German Cancer Research Center, 69120 Heidelberg, Germany, BioQuant, University of Heidelberg, 69120 Heidelberg, Germany.|Humboldt-Universität zu Berlin, Theoretical Biophysics, 10115 Berlin, Germany.|Helmholtz Center Munich, Institute of Computational Biology, 85764 Neuherberg, Germany, Technische Universität München, Department of Mathematics, 85748 Garching, Germany and.|Systems Biology of Signal Transduction and.|Merrimack Pharmaceuticals Inc., Discovery Devision, Cambridge, MA 02139, USA.|University of Freiburg, Institute for Physics, 79104 Freiburg, Germany, BIOSS Centre for Biological Signalling Studies, University of Freiburg, 79104 Freiburg, Germany.