1. Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
2. Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, USA
3. Department of Veterinary Pathobiology, Oklahoma State University, Stillwater, Oklahoma, USA
4. Department of Biology, Faculty of Science, Mahidol University, Bangkok, Thailand
5. Department of Biology and Microbiology, South Dakota State University, Brookings, South Dakota, USA