[1] Prefectural Univ Hiroshima, Grad Sch Comprehens Sci Res, Program Biol Syst Sci, Shobara, Japan
[2] Prefectural Univ Hiroshima, Fac Life & Environm Sci, Dept Life Sci, Shobara, Japan
[3] Kinki Univ, Fac Pharmaceut Educ, Dept Pharm, Higashiosaka, Osaka 577, Japan
[4] Osaka Electrocommun Univ, Grad Sch Engn, Neyagawa, Osaka 572, Japan
[5] Osaka Electrocommun Univ, Fac Engn, Dept Environm Sci, Neyagawa, Osaka 572, Japan
[6] Tohoku Univ, Dept Biosci & Biotechnol Future Bioind, Grad Sch Agr Sci, Sendai, Miyagi 980, Japan