title: Activation of influenza A viruses by trypsin treatment.
mesh_terms: D000327:Adsorption; D000818:Animals; D002642:Chick Embryo; D046508:Culture Techniques; D007240:Equartevirus / Q000032:analysis / Q000254:growth & development / Q000472:pathogenicity; D005321:Extraembryonic Membranes; D006023:Glycoproteins / Q000032:analysis; D006389:Hemagglutinins, Viral / Q000032:analysis; D009980:Influenza A virus / Q000032:analysis / Q000254:growth & development / Q000472:pathogenicity; D009975:Orthomyxoviridae / Q000472:pathogenicity*; D010455:Peptides / Q000032:analysis; D014357:Trypsin / Q000494:pharmacology*; D014764:Viral Proteins / Q000032:analysis; D014774:Virulence; D014779:Virus Replication
chemical_list: D006023:Glycoproteins; D006389:Hemagglutinins, Viral; D010455:Peptides; D014764:Viral Proteins; D014357:Trypsin