About the Authors
- Hideyuki Arata, Hiroshi Komatsu, Kazuo Hosokawa, Mizuo Maeda
- Bioengineering Laboratory, RIKEN, Wako, Japan
The authors have declared that no competing interests exist.
Conceived and designed the experiments: KH MM. Performed the experiments: HA HK. Analyzed the data: HA KH. Wrote the paper: HA KH MM.