1. Institute of Molecular Embryology and Genetics, Global COE ‘Cell Fate Regulation Research and Education Unit’, Kumamoto University, Kumamoto 860-0811, Japan
2. Center for Animal Resources and Development, Kumamoto University, Kumamoto 860-0811, Japan
3. Departments of Pediatrics, Neurobiology and Anatomy, and Human Genetics, University of Utah, UT 84112, USA
4. Graduate School of Molecular and Genomic Pharmacy, Kumamoto University, Kumamoto 860-0811, Japan
5. Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka 594-1101, Japan
6. Black Family Stem Cell Institute, Mount Sinai School of Medicine, New York, NY 10029, USA
7. Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
8. National Institutes of Natural Sciences, Okazaki 444-8787, Japan
9. Skaggs School of Pharmacy, University of California, San Diego, CA 92093, USA