1. Research and Development Division, Mitsubishi Kagaku Iatron, Inc., 1460-6 Mitodai, Mito, Takomachi, Katori-gun, Chiba 289-2247, Japan, Research and Development Division, NanoCarrier Co., Ltd., Tokatsu Techno Plaza, 5-4-6 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan, Department of Materials Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan, and Department of Materials Science, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113...