1. Laboratory of Veterinary Physiology 1, School of Veterinary Medicine, Azabu University
2. Laboratory of Veterinary Microbiology 1 & Research Institute of Biosciences, School of Veterinary Medicine,Azabu University
3. Laboratory of Animal Reproduction, School of Veterinary Medicine, Azabu University
4. Department of Veterinary Anatomy, Nippon Veterinary & Animal Science University