FJ520033   Influenza A virus (A/northern pintail/California/44249-38/2006(H4N6)) segment 2 polymerase PB1 (PB1) gene, partial cds; and PB1-F2 protein (PB1-F2) gene, complete cds.   [Influenza A virus (A/northern pintail/California/44249-38/2006(H4N6)) | 579436.4]