title: [Study of the antigenic relations between various strains of type A-2 influenza virus].
mesh_terms: D000941:Antigens; D006801:Humans; D009980:Influenza A virus; D009975:Orthomyxoviridae / Q000276:immunology*; D013180:Sprains and Strains
chemical_list: D000941:Antigens
keywords: INFLUENZA VIRUSES/immunology