1. Center
for Marine Environmental Studies (CMES), Ehime University, Bunkyo-cho
2-5, Matsuyama, Ehime 790-8577, Japan
2. Nakatsu Veterinary
Surgery, 2-2-5, Shorinjichonishi, Sakai-ku, Sakai-shi, Osaka 590-0960, Japan
3. Diagnostic
Center for Animal Health and Food Safety, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
4. Laboratory
of Toxicology, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo, Hokkaido 060-0818, Japan