HQ285884   Influenza A virus (A/duck/Hunan/8-19/2009(H4N2)) segment 2 polymerase PB1 (PB1) and PB1-F2 protein (PB1-F2) genes, complete cds.   [Influenza A virus (A/duck/Hunan/8-19/2009(H4N2)) | 888277.5]