Affiliation: | (1) Reproductive Biology Research Unit, Division of Animal Sciences, National Institute of Agrobiological Sciences, 2 Ikenodai, 305-8602 Tsukuba, Ibaraki, Japan;(2) Department of Technology, National Livestock Breeding Center, 1 Odakurahara, 961-8511 Odakura Nishigo, Fukushima, Japan;(3) Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, 3-18-8 Ueda, 020-8550 Morioka, Iwate, Japan |