title: A duck influenza virus with haemagglutinin related to that of A/Singapore/57 (H2N2) virus.
mesh_terms: D000818:Animals; D000956:Antigens, Viral / Q000032:analysis; D003168:Complement Fixation Tests; D004372:Ducks / Q000382:microbiology*; D006385:Hemagglutination Inhibition Tests; D006389:Hemagglutinins, Viral / Q000032:analysis*; D005779:Immunodiffusion; D053121:Influenza A Virus, H2N2 Subtype; D009980:Influenza A virus / Q000276:immunology*; D009439:Neuraminidase / Q000032:analysis; D009975:Orthomyxoviridae / Q000145:classification / Q000201:enzymology / Q000276:immunology*
chemical_list: D000956:Antigens, Viral; D006389:Hemagglutinins, Viral; D009439:Neuraminidase