Affiliation: | (1) Department of Cell Biology, Institute for Virus Research, Kyoto University, Sakyo-ku, Kyoto 606 (Japan), JP;(2) Department of Anatomy, Hokkaido University School of Medicine, Sapporo 060 (Japan), JP;(3) Department of Molecular Neurobiology and Pharmacology, School of Medicine, University of Tokyo, Tokyo 113 (Japan), JP |