title: Studies on the cytopathogenicity of Newcastle disease virus: relation between virulence, polykaryocytosis and plaque size.
mesh_terms: D000818:Animals; D002459:Cell Fusion; D002467:Cell Nucleus; D002642:Chick Embryo; D002645:Chickens; D046508:Culture Techniques; D003588:Cytopathogenic Effect, Viral; D009522:Newcastle disease virus / Q000472:pathogenicity; D014774:Virulence