Affiliation: | a Center for Experimental Animal Research, Iwate Medical University, 19-1 Uchimaru, Morioka, Iwate 020-8505, Japanb Department of Infectious Diseases, Research Institute National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo 162-8655, Japanc Biochemical Research Laboratory, Eiken Chemical Co., Ltd., Nogi, Tochigi 329-0114, Japan |