Abstract
1 Research Team for Zoonotic Diseases, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
2 Core Research for Evolutional Science and Technology, Japan Science and Technology Corporation, 4-1-8 Honcho, Kawaguchi-shi, Saitama 332-0012, Japan
3 National Institute of Advanced Industrial Science and Technology, 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan