1. Laboratory of Animal Production Science; Graduate School of Bioagricultural Sciences; Nagoya University; Chikusa-ku Nagoya Japan
2. Laboratory of Reproductive Science; Graduate School of Bioagricultural Sciences; Nagoya University; Chikusa-ku Nagoya Japan
3. Laboratory of Neurobiology; National Institute of Agrobiological Sciences; Tsukuba Japan
4. Laboratory of Theriogenology; Graduate School of Agricultural and Life Sciences; The University of Tokyo; Bunkyo-ku Tokyo Japan