Avian infectious bronchitis: specific lachrymal IgA level and resistance against challenge.

Avian infectious bronchitis: specific lachrymal IgA level and resistance against challenge. Research Abstract Details 

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Avian infectious bronchitis: specific lachrymal IgA level and resistance against challenge. Abstract Text:

H Toro,I Fernandez,

Since circulating antibody titres against infectious bronchitis virus (IBV) often correlate poorly with protection against re-infection, the lachrymal specific IgA level of IBV vaccinated chickens was evaluated as an indicator of resistance against challenge. For this purpose, the post-vaccination (pv) IBV specific lachrymal IgA response was monitored in 30 chickens at 3-day intervals until a rise of this specific isotype was detected. On day 19 pv, all birds (vaccinated group and non-vaccinated controls) were challenged with the moderately attenuated H-52 IBV strain via the ocular route. Protection was assessed by viral reisolation attempts in SPF embryonated chicken eggs (ECE) from tracheal swabs 4 days after challenge. Virus was detected in all control birds by the second passage in ECE. IBV was reisolated from 27% (eight birds) of all H-120-primed birds after five passages in ECE. These results demonstrate that lachrymal-fluid-specific IgA levels in chickens are associated with resistance against IBV reinfection and are therefore a suitable source of antibodies that could be used for flock profiling.

Avian infectious bronchitis: specific lachrymal IgA level and resistance against challenge. Publishing Authors By Initials

H Toro,I Fernandez,

For similar fluids and secretions: bodily secretions: tears research abstracts see: fluids and secretions: bodily secretions: tears research

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Avian infectious bronchitis: specific lachrymal IgA level and resistance against challenge. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Zentralblatt für Veterinärmedizin. Reihe B. Journa

VOLUME: 41

Page Numbers: 467-72

Journal Abbreviation: Zentralblatt Veterinarmedizin

ISSN: 0514-7166

DAY: 13

MONTH: Oct

YEAR: 1994

Avian infectious bronchitis: specific lachrymal IgA level and resistance against challenge. Information

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LANGUAGE: eng

NlmUniqueID: 331325

Avian infectious bronchitis: specific lachrymal IgA level and resistance against challenge. Keywords Mesh Terms:

KEYWORDS: Tears

MESH TERMS: immunology

Chemical & Substance for Abstract: Avian infectious bronchitis: specific lachrymal IgA level and resistance against challenge. Information

Substance Name: Immunoglobulin G

Registry Number: 0

Grant and Affiliation Information for Avian infectious bronchitis: specific lachrymal IgA level and resistance against challenge.

AFFILIATION: Department of Animal Pathology, College of Veterinary Sciences, University of Chile, Santiago.

Country: GERMANY

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MEDLINETA: Zentralbl Veterinarmed B

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