| abstract |
The invention relates to the field of animal virology, and provides separation identification and purification methods, biological characteristics and applications in biology of a recombinant fowl H9N2 avian influenza virus strain with preservation number being CCTCC NO:V200812; the differences between the virus and other separation strains are explained in term of molecular level; and the virus strain is proved to be capable of being used as candidate strain of avian influenza vaccines and as antigen of H9 subtype AIV hemoagglutination and hemoagglutination inhibition test (HA-HI). The strain has significance in knowing the molecular evolution and antigenic variation of fowl H9N2 avian influenza virus in China. |