Biopharmaccutical Laboratory;
College of Life Sciences;
Northeast Agricultural University;
Harbin 150030;
China;
Key Laboratory of Agricultural Biological Functional Gene;
Northeast Agricultural University;
Harbin 150030;
China;
College of Veterinary Medicine;
Northeast Agricultural University;
Harbin 150030;
China;
goose parvovirus(GPV); scFv; bacterial surface display technology; antibody library;