College of Animal Sciences and Veterinary Medicine;
Shandong Agricultural University;
Tai'an 271018;
P.R.China;
Insititute of Animal Sciences and Veterinary Medicine;
Zhejiang Academy of Agricultural Sciences;
Hangzhou 310021;
P.R.China;
猪流感病毒; NS1基因; 基因克隆; 原核表达; 抗原性;