the major virus-specific proteins ( ha , na , np , ns1 and m ) of five different isolates of influenza b virus ( b/lee/40 , b/osaka/2/70 , b/yamagata/1/73 , b/aomori/1/76 and b/yamagata/26/77 ) were compared by limited proteolysis with staphylococcus aureus v8 protease and subsequent polyacrylamide gel electrophoresis .
C0597304
proteolysis
C0030946
protease