[1] Shinshu Univ, Sch Med, Dept Parasitol, 3-1-1 Asahi, Matsumoto 3908621, Japan
[2] Mie Univ, Grad Sch Med, Dept Cellular & Mol Immunol, 2-174 Edobashi, Tsu, Mie 5148507, Japan
[3] Nagoya Univ, Dept Immunol, Grad Sch Med, 65 Tsurumai cho,Showa ku, Nagoya 4668550, Japan
[4] Tokyo Med Univ, Inst Med Sci, Dept Immunoregulat, 6-1-1 Shinjuku,Shinjuku Ku, Tokyo 1608402, Japan