About the Authors
Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan
Laboratory of Developmental Biology, School of Human Sciences, Waseda University, Saitama, Japan
The authors have declared that no competing interests exist.
Conceived and designed the experiments: IK SS. Performed the experiments: AH YT. Analyzed the data: AH YT. Contributed reagents/materials/analysis tools: IK. Wrote the paper: AH SS.