a comparative study of peptide maps of major proteins of hemagglutinin , nucleoprotein , membrane of influenza a virus strains a/ws/33 , a/fm/1/47 , a/singapore/1/57 , a/ussr/090/77 , a/port chalmers/1/73 ( mrc-11 ) , was carried out .
C0033684
proteins
C0028612
nucleoprotein