1. Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou, Jiangsu 225125, China
2. State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School
3. Department of Pathobiology, Auburn University College of Veterinary Medicine, Auburn AL 36849
4. Key Laboratory of Prevention and Control Agents for Animal Bacteriosis, Institute of Animal Husbandr
5. Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, C