Results 171 to 180 of about 8,844 (204)

An Enterotropic Avian Infectious Bronchitis Virus

1986
Of six isolates of infectious bronchitis (IB) virus isolated from commercial poultry flocks in Morocco, five (designated D,E,F, H and M) were related serologically to the Massachusetts serotype, while a sixth, (designated G) was found to be different from any previously reported serotype of IB virus.
R. C. Jones, M. El Houadfi, Jane K. A. Cook, A. Ambali   +3 more
openaire   +1 more source

Avian Infectious Bronchitis: Virus Distribution in Tissues of Chicks

Avian Diseases, 1966
The virus of infectious bronchitis (IB) multiplies primarily in the respiratory tract; little is known about its presence in other organs. Fabricant and Levine (1) reported the presence of virus in eggs during active infection and for 36 days thereafter. Winterfield and Hitchner (5) isolated IB virus from kidneys.
M S, Hofstad, H W, Yoder
openaire   +2 more sources

Avian infectious bronchitis virus.

Revue scientifique et technique (International Office of Epizootics), 2001
Infectious bronchitis virus (IBV) is prevalent in all countries with an intensive poultry industry, with the incidence of infection approaching 100% in most locations. Vaccination is only partially successful due to the continual emergence of antigenic variants.
J, Ignjatović, S, Sapats
openaire   +1 more source

Chicken embryonal vaccination with avian infectious bronchitis virus

American Journal of Veterinary Research, 1986
SUMMARY A commercial infectious bronchitis virus (ibv) vaccine of the Massachusetts 41 strain was injected in embryonating chicken eggs on embryonation day (ed) 18. The ibv vaccine was pathogenic for embryos, and it was passaged in chicken kidney tissue culture to reduce the pathogenicity.
P S, Wakenell, J M, Sharma
openaire   +2 more sources

Rapid detection and identification of avian infectious bronchitis virus

Journal of Clinical Microbiology, 1992
A rapid and sensitive method for the detection and unambiguous typing of infectious bronchitis virus (IBV) is described. RNA was isolated from IBV-infected allantoic fluid and was transcribed into cDNA. This cDNA was amplified by the polymerase chain reaction. The polymerase chain reaction products were subsequently analyzed on an agarose gel.
K A, Zwaagstra, B A, van der Zeijst, J G, Kusters   +2 more
openaire   +2 more sources

Pathogenicity of Australian Strains of Avian Infectious Bronchitis Virus

Journal of Comparative Pathology, 2002
The pathogenicity of 25 strains of infectious bronchitis virus (IBV) isolated in Australia between 1961 and 1994 was compared in white leghorn specific pathogen-free chicks. Twelve strains were nephropathogenic and 10 respiratory, the other three being of mixed pathogenicity.
J, Ignjatovic, D F, Ashton, R, Reece, P, Scott, P, Hooper   +4 more
openaire   +2 more sources

Differentiation of Avian Infectious Bronchitis Virus Serotypes by Immunofluorescence

Avian Diseases, 1969
Differences in immunofluorescent staining were observed between 4 serotypes of IBV when infected cells were stained with heterologous fluorescein-tagged antiserums. Differences were reflected either by variations in intensity of fluorescence or its absence. The serotypes used were IBV-41, IBV-46, Iowa-97, and RPL.
openaire   +2 more sources

Serotyping of Avian Infectious Bronchitis Viruses by the Virus-Neutralization Test

Avian Diseases, 1975
The antigenic relationships of 12 strains of infectious bronchitis virus (IBV) were evaluated by a virus-neutralization procedure similar to that used in typing human rhinoviruses. Such a procedure consists of reciprocal neutralization tests performed by reacting 32-320 EID50 or plaque-forming units of virus with 20 antibody units of antiserum.
B S, Cowen, S B, Hitchner
openaire   +2 more sources

Morphogenesis of Avian Infectious Bronchitis Virus in Chicken Embryo Fibroblasts

Journal of General Virology, 1968
Avian infectious bronchitis virus is a ribonucleic acid-containing ether-sensitive medium-sized virus lacking direct haemagglutinating activity except under special circumstances (Cunningham, 1963; Biswal, Nazerian & Cunningham, 1966) and has been considered as a possible myxovirus on these bases (Cabasso, 1965).
K, Nazerian, C H, Cunningham
openaire   +2 more sources

Recent studies on the enterotropic strain of avian infectious bronchitis virus

Veterinary Research Communications, 1992
Avian infectious bronchitis (AIB) is an economically important disease of chickens. Recent studies have revealed enterotropism by at least one strain of AIB virus with pathological lesions in parts of the gut. This review highlights the findings of the studies so far made on this enterotropic strain of AIB virus.
exaly   +3 more sources