EF633437   Influenza A virus (A/Leningrad/134/47/ts+18/1957(H2N2)) transmembrane protein (M2) and membrane matrix protein (M1) genes, complete cds.   [Influenza A virus (A/Leningrad/134/47/ts+18/1957(H2N2)) A/Leningrad/134/47/ts+18/1957 | 447527.7]