National;
Foot-and-mouth;
Disease;
Reference;
Laboratory,;
Key;
Laboratory;
of;
Animal;
Virology;
of;
Ministry;
of;
Agriculture,;
State;
Key;
Laboratory;
of;
Veterinary;
Etiological;
Biology,;
Lanzhou;
Veterinary;
Research;
Institute,;
Chinese;
Academy;
of;
Agricultural;
Sciences,;
Lanzhou;
730046,;
China;