About the Authors

Takashi Sugihara

sugihara@ies.or.jp

Affiliation Department of Radiobiology, Institute for Environmental Sciences, Rokkasho, Kamikita, Aomori, Japan

Hayato Murano

Affiliation Tohoku Environmental Sciences Services Corporation, Rokkasho, Kamikita, Aomori, Japan

Kimio Tanaka

Affiliation Department of Radiobiology, Institute for Environmental Sciences, Rokkasho, Kamikita, Aomori, Japan

Competing Interests

Author Hayato Murano is employed by a commercial company “Tohoku Environmental Sciences Services Corporation,” this does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials. The other authors have no conflicts of interest to declare.

Author Contributions

Conceived and designed the experiments: TS KT. Performed the experiments: TS HM. Analyzed the data: TS HM. Contributed reagents/materials/analysis tools: TS HM. Wrote the paper: TS KT. Final checks of these experiments. TS KT.