B Panigraphy

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Excessive unexplained mortality was observed in flocks of double-crested cormorants located at Snake Island in Green Bay, Michigan, in June 1992. Clinical signs included weakness, lethargy, diarrhea, respiratory distress, paralysis of the wings and legs, torticollis, and incoordination. The most significant and consistent gross lesions included edema of the(More)
Immunogenicity of an oil-emulsified Escherichia coli (O1:K1) bacterin with an aqueous-phase-to-oil-phase ratio of 1:4 was evaluated in chickens. Chickens were vaccinated subcutaneously with 0.5 ml of the bacterin at 4 and 6 weeks of age. At 8 weeks, the vaccinated chickens and unvaccinated controls were challenged via air sacs with 10(4) colony-forming(More)
Immunogenicity of an aqueous Mycoplasma gallisepticum (MG) bacterin and two oil-emulsified bacterins with aqueous-phase-to-oil-phase ratios of 1:2 and 1:4 were evaluated in 3 groups of 5-week-old MG-free White Leghorn chickens. Group 4 chickens were nonimmunized controls. Group 1, 2, and 3 chickens received primary immunizations with 0.5 ml of bacterin(More)
Bovine adenovirus type 3 (BAV-3), strain WBR-1, quantitatively transforms hamster embryo carcass cells with a maximum efficiency of 4-7 X 10-4 p.f.u./focus-forming units (f.f.u). This frequency is signigicantly inhibited by the presence of 1-8 mM of Ca++. The transformed cells are highly tumourigenic in hamsters and possess T- and tumour-specific(More)
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