1. Faculty of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Kumamoto 862, Japan, Department of Radiology, Kumamoto University School of Medicine, Honjo, Kumamoto 860, Japan, Department of Patho-Functional Bioanalysis, Graduate School of Pharmaceutical Sciences, Department of Nuclear Medicine and Diagnostic Imaging, Graduate School of Medicine, Kyoto University, Yoshida-Shimoadachi-cho, Sakyo-ku, Kyoto 606-01, Japan, and The Chemo-Sero Therapeutic Research Institute, Kyokushi-mura, Kikuchi...