The study of virus virulence using Newcastle disease virus.
D000818:Animals; D002642:Chick Embryo; D003588:Cytopathogenic Effect, Viral; D066298:In Vitro Techniques; D007372:Interferons / Q000096:biosynthesis; D009522:Newcastle disease virus / Q000472:pathogenicity*; D014774:Virulence; D014776:Virus Cultivation; D014779:Virus Replication
D007372:Interferons