About the Authors

Hitomi Ohta

htmohta@hayashibara.co.jp

Affiliation Research Center, Hayashibara Biochemical Laboratories, Inc., Okayama, Japan

Shigeyuki Arai

Affiliation Research Center, Hayashibara Biochemical Laboratories, Inc., Okayama, Japan

Kenji Akita

Affiliation Research Center, Hayashibara Biochemical Laboratories, Inc., Okayama, Japan

Tsunetaka Ohta

Affiliation Research Center, Hayashibara Biochemical Laboratories, Inc., Okayama, Japan

Shigeharu Fukuda

Affiliation Research Center, Hayashibara Biochemical Laboratories, Inc., Okayama, Japan

Competing Interests

The authors are employees of, and funded by Hayashibara Biochemical Laboratories Inc. The Hayashibara Biochemical Laboratories are assignees of a patent submitted for applications related to this work (International Patent Application No. PCT/JP2010/050927). This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials. At the present moment, there are no products in development or marketed products that are associated with this study.

Author Contributions

Conceived and designed the experiments: HO SA KA TO SF. Performed the experiments: HO SA KA. Analyzed the data: HO KA. Contributed reagents/materials/analysis tools: HO SA KA. Wrote the paper: HO KA TO.