title: In ovo interference of embryo non-lethal avian infectious bronchitis viruses (IBV) with velogenic Newcastle disease virus and embryo adapted IBV.
abstract: Avian infectious bronchitis virus (IBV) interfered with the lethal effects of velogenic Newcastle disease virus (NDV) and embryo adapted IBV in eggs previously inoculated with non-lethal IBV. Greater interference was noted in eggs superinfected with embryo adapted IBV than velogenic NDV. The interference could be eliminated by treating the initial IBV with homologous anti-IBV serum.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D003332:Coronaviridae / Q000472:pathogenicity*; D003333:Coronaviridae Infections / Q000382:microbiology; D001351:Infectious bronchitis virus / Q000472:pathogenicity*; D009521:Newcastle Disease / Q000382:microbiology; D009522:Newcastle disease virus / Q000472:pathogenicity*; D009924:Organ Culture Techniques; D014132:Trachea; D014762:Viral Interference