1. Organization for Promotion of Tenure Track, University of Miyazaki, Miyazaki 889-1692, Japan.
2. RIKEN BioResource Center, Tsukuba, Ibaraki 305-0074, Japan.
3. Department of Histochemistry and Cell Biology, Department of Anatomy, Faculty of Medicine, University of Miyazaki, Miyazaki 889-1692, Japan.
4. Division of Bio-Resources, Frontier Science Research Center, University of Miyazaki, Miyazaki 889-1692, Japan.
5. Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan.
6. Japan Science and Technology Agency (JST), Exploratory Research for Advanced Technology (ERATO), Yoshida-Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan.
7. Department of Stem Cells and Human Disease Models, Research Center for Animal Life Science, Shiga University of Medical Science, Seta, Tsukinowa-cho, Otsu, Shiga 520-2192, Japan.
8. Laboratory for Developmental Genetics, RIKEN Center for Integrative Medical Sciences, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan.
9. Division of Reproductive and Developmental Biology, Department of Biological Sciences, Faculty of Science, Hokkaido University, Sapporo, Japan.
10. Center for iPS Cell Research and Application, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.
11. Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshida-Ushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan.