1. a Graduate Institute of Veterinary Pathology and Department of Veterinary Medicine , National Chung Hsing University , Taichung, Taiwan, ROC
2. b Institute of Molecular Biology , National Chung Hsing University , Taichung, Taiwan, ROC
3. c Department of Pharmacy and the Graduate Institute of Pharmaceutical Technology , Tajen University , Pingtung, Taiwan, ROC
4. d Department of Environmental Engineering and Management , Chaoyang University of Technology , Wufeng, Taiwan, ROC
5. e Department of Veterinary Medicine , National Taiwan University , Taipei, Taiwan, ROC