title: Difference in protein patterns of influenza A viruses.
mesh_terms: D004591:Electrophoresis, Polyacrylamide Gel; D006389:Hemagglutinins, Viral / Q000032:analysis; D009980:Influenza A virus / Q000032:analysis*; D008565:Membrane Proteins / Q000032:analysis; D009698:Nucleoproteins / Q000032:analysis; D014764:Viral Proteins / Q000032:analysis*
chemical_list: D006389:Hemagglutinins, Viral; D008565:Membrane Proteins; D009698:Nucleoproteins; D014764:Viral Proteins