The genetic dissection of viral virulence.
D000818:Animals; D000956:Antigens, Viral / Q000235:genetics; D002642:Chick Embryo; D019267:Hemagglutinin Glycoproteins, Influenza Virus; D006389:Hemagglutinins, Viral / Q000235:genetics; D009980:Influenza A virus / Q000235:genetics* / Q000472:pathogenicity; D009976:Orthomyxoviridae Infections / Q000209:etiology; D012367:RNA, Viral / Q000235:genetics; D014774:Virulence
D000956:Antigens, Viral; D019267:Hemagglutinin Glycoproteins, Influenza Virus; D006389:Hemagglutinins, Viral; D012367:RNA, Viral