1 Department of Developmental Immunology, Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany.
2 Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden.
3 Bioinformatic Unit, Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany.
4 Transgenic Mouse Core Facility, Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany.
5 Department of Developmental Immunology, Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany. boehm@ie-freiburg.mpg.de.
6 Institute for Immunodeficiency, Center for Chronic Immunodeficiency (CCI), University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany. boehm@ie-freiburg.mpg.de.