[1] Laboratory of Neuroscience, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
[2] Department of Molecular Neurobiology, Faculty of Medicine, Kagawa University, Takamatsu, Japan
[3] Laboratories for Animal Resource Development, Japan
[4] Genetic Engineering, Japan
[5] Cell Asymmetry, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan