title: Proteolytic action of aspergillus niger extract on influenza virus.
mesh_terms: D001234:Aspergillus niger / Q000201:enzymology*; D006389:Hemagglutinins, Viral / Q000378:metabolism*; D006868:Hydrolysis; D009980:Influenza A virus / Q000378:metabolism*; D010447:Peptide Hydrolases / Q000378:metabolism; D014764:Viral Proteins / Q000378:metabolism
chemical_list: D006389:Hemagglutinins, Viral; D014764:Viral Proteins; D010447:Peptide Hydrolases