As reference sequences we used EU118820 for HPR0 variant and GU830900 for HPR7b variant from the GenBank database. ‡Referred to the presence of insert-4 (IN4) and the specific amino acid (AA) in posit
Amino acid differences between avian influenza H9N2 TS and V viruses Amino acid differences of surface proteins between avian influenza H9N2 TS and V viruses.
