1. Key Laboratory of Bioengineering & Biotechnology of State Ethnic Affairs Commission Engineering & Technology Research Center for Animal Cell, Gansu College of Life Science and Engineering Northwest Minzu University Lanzhou China
2. Experimental Immunology Branch National Cancer Institute National Institutes of Health Bethesda MD USA
3. State Key Laboratory of Veterinary Etiological Biology Lanzhou Veterinary Research Institute Chinese Academy of Agricultural Sciences Lanzhou China
4. Ministry of Education Key Laboratory of Molecular Microbiology and Technology Nankai University Tianjin China