1. Division of Materials Science and Chemical Engineering Faculty of Engineering Yokohama National University Yokohama Kanagawa Japan
2. Division of Materials Science and Chemical Engineering Graduate School of Engineering Yokohama National University Yokohama Kanagawa Japan
3. Mass Spectrometric Unit RIKEN Center for Developmental Biology Kobe Hyogo Japan
4. Division of Mammalian Development National Institute of Genetics Mishima Shizuoka Japan