1. Department of Patho-Functional Bioanalysis, Graduate School of Pharmaceutical Sciences; Kyoto University; Sakyo-ku Kyoto Kyoto 606-8501 Japan
2. Radioisotope Research Center; Kyoto University; Yoshida Konoe-cho, Sakyo-ku Kyoto Kyoto 606-8501 Japan
3. Technology Development Dept.; SAIDA FDS Inc.; 143-10 Isshiki Yaizu Shizuoka 425-0054 Japan