title: Resistance of mice immunized per os with A2 influenza virus to intranasal challenge with a pathogenic strain.
mesh_terms: D000281:Administration, Intranasal; D000284:Administration, Oral; D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D000917:Antibody Formation; D002642:Chick Embryo; D006385:Hemagglutination Inhibition Tests; D007109:Immunity; D007252:Influenza Vaccines / Q000008:administration & dosage*; D008168:Lung / Q000382:microbiology / Q000473:pathology; D051379:Mice; D008807:Mice, Inbred BALB C; D009500:Neutralization Tests; D009975:Orthomyxoviridae / Q000254:growth & development / Q000276:immunology* / Q000472:pathogenicity; D009976:Orthomyxoviridae Infections / Q000276:immunology* / Q000473:pathology; D010950:Plasma Cells; D013997:Time Factors; D014774:Virulence; D014779:Virus Replication
chemical_list: D000914:Antibodies, Viral; D007252:Influenza Vaccines