1. Laboratory of Animal Reproduction, Faculty of Bioscience and Bioindustry, Tokushima University, 2272-1 Ishii, Myozai-gun, Tokushima 779-3233, Japan.
2. Diabetes Therapeutics and Research Center, Tokushima University, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
3. Division of Embryology, Fujii Memorial Institute of Medical Sciences, Tokushima University, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
4. Research and Development Center, NH Foods Ltd., 3-3 Midorigahara, Tsukuba, Ibaraki 300-2646, Japan.
5. Laboratory of Animal Reproduction, Department of Animal Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, 252-0880, Japan.
6. Transgenic Pig Research Unit, National Institute of Agrobiological Sciences, 2 Ikenodai, Tsukuba, Ibaraki, 305-0901, Japan.
7. Laboratory for Embryogenesis, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan.
8. Department of Orthodontics and Dentofacial Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima 770-8504, Japan.
9. Department of Life System, Institute of Technology and Science, Tokushima University, 2-1 Minami-Jyosanjima-cho, Tokushima 770-8506, Japan.