1. The Research Center for Protozoan Molecular Immunology, Obihiro University of Agriculture and Veterinary Medicine
2. The Epizootic Research Station, Equine Research Institute, The Japan Association
3. Department of Veterinary Physiology, Obihiro University of Agriculture and Veterinary Medicine
4. Department of Veterinary Parasitology, School of Veterinary Medicine and Animal Sciences, Kitasato University