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Updated: Aug 14, 2026
10:55
Rescue of Recombinant Newcastle Disease Virus from cDNA
Published on: October 11, 2013
Newcastle disease virus antigens and strain variations
American Journal of Veterinary Research
|April 1, 1975
Summary
Differentiating Newcastle disease virus strains is challenging due to genetic diversity. This study used kinetic neutralization tests to reveal antigenic differences among three recently isolated velogenic viscerotropic Newcastle disease virus plaque clones.
Area of Science:
- Virology
- Immunology
- Avian Health
Background:
- Newcastle disease virus (NDV) strains exhibit genetic diversity, complicating antigenic studies.
- Variations in plaque populations and antibody avidity affect NDV characterization.
Purpose of the Study:
- To investigate antigenic distinctions among three velogenic viscerotropic NDV plaque clones.
- To differentiate recent NDV isolates from established strains using kinetic neutralization.
Main Methods:
- Kinetic neutralization tests were employed to assess antigenic differences.
- Plaque structure, hemagglutinin, and neuraminidase activity were analyzed for viral characterization.
Main Results:
- Three distinct plaque clones of velogenic viscerotropic NDV were identified.
- Antigenic differences were demonstrated among these clones and from older NDV strains.
Conclusions:
- Plaque structure and enzymatic activity aid in distinguishing NDV variants.
- Recent NDV isolates possess unique antigenic profiles compared to historical strains.
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