1. Department of Microbiology; Faculty of Medicine, Kagawa University; Miki Kagawa Japan
2. Department of Immunology and Parasitology; Institute of Health Biosciences, The University of Tokushima Graduate School; Kuramoto-cho Tokushima Japan
3. Department of Applied Bioscience; Faculty of Agriculture, Kagawa University; Miki Kagawa Japan
4. Kazusa DNA Research Institute, Kazusa-Kamatari; Kisarazu Chiba Japan
5. School of Veterinary Medicine; Azabu University; Fuchinobe Sagamihara Japan