1. Environmental Health Science Laboratory, Sumitomo Chemical Co., Ltd., Osaka, Japan.
2. Department of Bioengineering, Graduate School of Engineering, Osaka City University, Osaka, Japan.
3. Department of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University, Yamagata, Japan.
4. Laboratory of Toxicology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, Japan.