1. Department of Bacteriology, Hirosaki University School of Medicine Hirosaki
2. Institute of Experimental Animals, Shinshu University School of Medicine Matsumoto
3. Department of Molecular Biology and Immunology, National Institute of Agrobiological Sciences Tsukuba
4. Center for Experimental Medicine, Institute of Medical Science, University of Tokyo Tokyo
5. Department of Dermatology, Hirosaki University School of Medicine Hirosaki Japan