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النتائج 1 - 2 من 2
Studies on the antigenicity and immunogenicity of Newcastle disease virus inactivated with binary ethylenimine
1985
Park, B.K. | Jeon, Y.S. | Lee, Y.S. (Seoul National Univ., Suwon (Korea R.). Coll. of Veteinary Medicine) | Rhee, Y.O. (Rural Development Administration, Anyang (Korea R.). Veterinary Research Inst.)
Effects of binary ethylenimine (BEI) treatment on the inactivation of infectivity and hemagglutinin of Newcastle disease virus (NDV) were studied in comparison with those of formalin treatment. Immune responses of chickens vaccinated with BEI- inactivated NDV vaccines were also investigated. Complete loss of infectivity of NDV (BI) was observed at 3, 7, and 24 hrs after the treatment at 37 deg C with BEI concentrations of 0.01M, 0.005M and 0.001M, respectively
اظهر المزيد [+] اقل [-]An occurrence of duck virus hepatitis in Korea
1985
Park, N.Y. (Chonnam National Univ., Kwangju (Korea R.). Dept. of Veterinary Medicine)
An outbreak of duck virus hepatitis was confirmed for the first time in Korea from ducklings having up to 40-65% mortality in less than 15-day-old ducklings of two farms located in the vicinity of Kwangju city. The infected ducks showed sudden death and opisthotonus position. The predominant gross lesions were found in the liver, showing enlargement and petechial or ecchymotic hemorrhages. The microscopic findings consisted of fatty changes and necrosis of the hepatic cells, and proliferation of the bile duct epithelium
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