1. Center for Genetic Analysis of Behavior, National Institute for Physiological Sciences, Okazaki, Aichi, 444-8787, Japan.
2. Department of Physiology, Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226.
3. Department of Physiology and Department of Pediatrics, Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226.
4. Present address: HudsonAlpha Institute for Biotechnology, Huntsville, Alabama, 35806.
5. Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, 108-8639, Japan.
6. Japan Science Technology Agency, ERATO, Nakauchi Stem Cell and Organ Regeneration Project, Minato-ku, Tokyo, 108-8639, Japan.
7. Present address: Gurdon Institute, University of Cambridge, Cambridge, CB2 1QN, United Kingdom.
8. Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano, 386-8567, Japan.