1. Department of Molecular Pathology, Institute of Pathology, University of Würzburg, D-97080 Würzburg, Germany
2. Immune Disease Institute and Harvard Medical School, Boston, MA 02114
3. Central Animal Facility, University of Mainz, D-55101 Mainz, Germany
4. Department of Genetics, University of Erlangen-Nürnberg, D-91058 Erlangen, Germany
5. Department of Physiological Chemistry, University of Ulm, D-89081 Ulm, Germany
6. Institute of Medical and Clinical Immunology, University Magdeburg, D-39120 Magdeburg, Germany
7. Department of Pathology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8558, Japan