EU580552   Influenza A virus (A/Anas crecca/Astrakhan/646/1987(H4N3)) segment 8 nonstructural protein 2 (NS2) and nonstructural protein 1 (NS1) genes, complete cds.   [Influenza A virus (A/Anas crecca/Astrakhan/646/1987(H4N3)) | 538404.4]