title: Isolation and properties of small and large plaque variants of the Blacksburg (B 1) strain of Newcastle disease virus.
mesh_terms: D000818:Animals; D000906:Antibodies; D002642:Chick Embryo; D009522:Newcastle disease virus / Q000276:immunology / Q000302:isolation & purification*; D009573:Nitrites / Q000494:pharmacology; D013696:Temperature; D014776:Virus Cultivation
chemical_list: D000906:Antibodies; D009573:Nitrites