GU052240   Influenza A virus (A/blackhead gull/Astrakhan/458/1985(H13N6)) segment 7 matrix protein 2 (M2) and matrix protein 1 (M1) genes, complete cds.   [Influenza A virus (A/black-headed gull/Astrakhan/458/1985(H13N6)) A/blackhead gull/Astrakhan/458/1985 | 538414.7]