1. Laboratory of Veterinary Pathology; Gifu University; Gifu Japan
2. Animal Medical Center; Gifu University; Gifu Japan
3. Laboratory of Veterinary Clinical Oncology; Gifu University; Gifu Japan
4. Department of Veterinary Medicine; Comparative Cancer Center; Faculty of Applied Biological Sciences; Gifu University; Gifu Japan
5. Division of Animal Experiment; Life Science Research Center; Gifu University; Gifu Japan