>sp|A8C8W4-1|M2_I67A2 Isoform M2 of Matrix protein 2 OS=Influenza A virus (strain A/Swine/Wisconsin/1/1967 H1N1) OX=382855 GN=M MSLLTEVETPIRSEWECRCNDSSDPLVAAASIIGILHLILWILDRLFFKCIYRRFKYGLK RGPSTEGVPESMREEYRQKQQNAVDVDDGHFVNIVLE