1. Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Institute of Resource Development and Analysis, Kumamoto University, Kumamoto 860-0811, Japan
2. Division of Reproductive Biotechnology and Innovation, Center for Animal Resources and Development (CARD), Institute of Resource Development and Analysis, Kumamoto University, Kumamoto 860-0811, Japan
3. Kyudo Co., Ltd., Saga 841-0075, Japan