Table 3. Amino acid substitutions in PB2 and NS after three passages.
Virus | Species | Culture1 | PB2 | NS1 |
Ch/H9N2 | Homing pigeon | TOC | E472K, L571I | V18I |
EF | I382T, E472K, L571I | |||
Turkey | TOC | E472K, L571I | ||
EF | E472K, L571I | V18I | ||
Chicken | TOC | E472K, L571I | ||
EF | E472K, L571I | |||
Pekin duck | TOC | E472K, L571I | ||
EF | E472K, L571I |
TOC: Tracheal organ culture; EF: Embryo fibroblast culture.