1. Department of Animal Infectious Diseases and Veterinary Public Health, Faculty of Veterinary Medicine, Bogor Agricultural University, Bogor16680, Indonesia
2. Department of Veterinary Public Health, Faculty of Veterinary Medicine, Gadjah Mada University, Yogyakarta 55281, Indonesia
3. Livestock, Fisheries and Marine Services, Garut 44118, Indonesia
4. Laboratory of Animal Morphology, Nagoya University, Nagoya 464-8601, Japan