GQ257493   Influenza A virus (A/mallard/Maryland/538/2002(H11N9)) segment 2 polymerase PB1 (PB1) and PB1-F2 protein (PB1-F2) genes, complete cds.   [Influenza A virus (A/mallard/Maryland/538/2002(H11N9)) | 652007.10]