Department of Preventive Veterinary Medicine;
College of Veterinary Medicine;
Northwest A&F University;
Yangling Observing and Experimental Station of National Data Center of Animal Health;
Ministry of Agriculture;
Yangling;
712100;
China;
Kunming Customs Technology Center;
Kunming;
650228;
China;
African swine fever virus(ASFV); Nanobody; ASFV-p30; Nanobody-HRP fusion Protein; Competitive ELISA;