1. Department of Cellular and Molecular Biology, Primate Research Institute, Kyoto University
2. Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology
3. Department of Basic Veterinary Sciences, The United Graduate School of Veterinary Sciences, Gifu University
4. Department of Animal Reproduction, National Institute of Agrobiological Resource
5. Division of Agrobiological Resource II, National Institute of Agrobiological Resource