1. Laboratory of Cellular Biochemistry, Animal Resource Science/Veterinary Medical Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
2. Laboratory of Fish Propagatior, Faculty of Bioresources, Mie University, Tsu, Mie, Japan
3. Department of Tumor Immunology, Tokyo Metropolitan Institute of Medical Science, Bunkyo-ku, Tokyo, Japan
4. Laboratory of Surgery, Veterinary Medical Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
5. Kamogawa Sea World, Kamogawa, Chiba, Japan