Affiliation: | 1. (Visiting Researcher at IMS), Frontier Biochemical & Medical Research Laboratories, KANEKA Corporation, Takasago 676‐8688 (Japan);2. Institute for Molecular Science (IMS), Higahsiyama 5‐1, Okazaki 444‐8787 (Japan), Fax: (+81)?564‐59‐5574 |