Corresponding Author

Masataka Nakayama

Laboratory of Biomedical Science, Department of Veterinary Medical Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan

Correspondence Masataka Nakayama, Present address: Kanto Regional Agricultural Administration Office (Saitama), Forestry and Fisheries, Ministry of Agriculture, Japan.

Email: masataka_nakayama120@maff.go.jp

Correspondence Shigeru Kyuwa, Laboratory of Biomedical Science, Department of Veterinary Medical Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.

Email: akyuwa1@g.ecc.u-tokyo.ac.jp