title: Thermostability of the hemagglutinin of Newcastle disease virus as a strain marker in epizootiologic studies.
abstract: The recent isolation of viscerotropic velogenic strains of Newcastle disease virus having a thermosensitive hemagglutinin and of a lentogenic strain with an unusually thermostable hemagglutinin confirmed that virulence for chickens was not related to the thermostability and could be used as a marker for strains in epizootiologic investigations.
mesh_terms: D006386:Hemagglutination Tests; D006389:Hemagglutinins, Viral / Q000032:analysis*; D009522:Newcastle disease virus / Q000276:immunology* / Q000302:isolation & purification; D013696:Temperature
chemical_list: D006389:Hemagglutinins, Viral