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Articles |
Diagnostic Laboratory, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853.
The spreading characteristic of a tissue-culture-modified laryngotracheitis virus (LTV) was demonstrated in chickens under both laboratory and field conditions. An enzyme-linked immunosorbent assay was used to measure serum antibodies to LTV in experimental chickens. Contact controls developed immunity comparable to that of vaccinates and were able to resist challenge with a virulent LTV inoculated into the infraorbital sinus.
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