About the Authors

Masayo Soma

masayo.soma@sci.hokudai.ac.jp

Affiliation Department of Biology, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, Hokkaido 060–0810, Japan

Chihiro Mori

Affiliation Biosystems Science Course, Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, Hokkaido 060–0810, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MS CM. Performed the experiments: MS CM. Analyzed the data: MS. Contributed reagents/materials/analysis tools: MS CM. Wrote the paper: MS.