Pathogenicity of Two Embryo-Passage Levels of Avian Infectious Bronchitis Virus for the Oviduct of Young Chickens of Various Ages

Evaluation was made of the pathogenicity for the oviduct of Massachusetts (Mass) serotype, strain 33, of infectious bronchitis virus (IBV) of two different embryo-passage levels, respectively 7th and 55th. Also ascertained was the susceptibility of chickens exposed at different ages. Three parameter...

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Veröffentlicht in:	Avian diseases 1972-10, Vol.16 (5), p.967-973
Hauptverfasser:	Crinion, R. A. P., Hofstad, M. S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Age Factors Animals Antigens, Viral Bronchitis - microbiology Bronchitis - pathology Bronchitis - veterinary Chick Embryo Chickens Edema - pathology Edema - veterinary Embryos Epithelial Cells Female Fluorescent Antibody Technique Infectious bronchitis virus Inoculation Lesions Oviducts Oviducts - immunology Oviducts - pathology Poultry Diseases - etiology Poultry Diseases - microbiology Poultry Diseases - pathology RNA Viruses - immunology RNA Viruses - pathogenicity Vaccination Viral antigens Virus Cultivation Virus Diseases - etiology Virus Diseases - microbiology Virus Diseases - pathology Virus Diseases - veterinary Viruses
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