EF633440   Influenza A virus (A/Leningrad/134/47/ts+18/1957(H2N2)) polymerase acidic protein (PA) gene, complete cds.   [Influenza A virus (A/Leningrad/134/47/ts+18/1957(H2N2)) A/Leningrad/134/47/ts+18/1957 | 447527.5]