title: An avian influenza virus of which infectivity is neutralized by antisera lacking hemagglutination-inhibition activity. Brief report.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000276:immunology*; D002645:Chickens; D004372:Ducks; D006385:Hemagglutination Inhibition Tests; D006387:Hemagglutination, Viral; D009980:Influenza A virus / Q000276:immunology*; D005585:Influenza in Birds / Q000276:immunology*; D051379:Mice; D008907:Mink; D009500:Neutralization Tests; D013045:Species Specificity
chemical_list: D000914:Antibodies, Viral