1. Strategic Headquarters for Research and Development, BONAC Corporation, BIO Factory 4F, 4-1488 Aikawa, Kurume, Fukuoka 839-0861, Japan, 2Department of Immunology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan and 3Department of Natural History of Science, Hokkaido University Graduate School of Science, Kita-ku, Sapporo 060-0810, Japan