Properties of an avirulent influenza A virus variant derived from drug-treated mice infected with PR8 virus.
D000818:Animals; D000941:Antigens / Q000032:analysis; D001713:Biphenyl Compounds / Q000494:pharmacology; D002642:Chick Embryo; D003168:Complement Fixation Tests; D014644:Genetic Variation / Q000187:drug effects; D006385:Hemagglutination Inhibition Tests; D007114:Immunization; D051379:Mice; D009500:Neutralization Tests; D009975:Orthomyxoviridae / Q000254:growth & development / Q000276:immunology / Q000472:pathogenicity*; D014461:Ultracentrifugation; D014762:Viral Interference; D014774:Virulence
D000941:Antigens; D001713:Biphenyl Compounds