Thermal Inactivation of Newcastle Disease Virus
نویسندگان
چکیده
منابع مشابه
Thermal inactivation of Newcastle disease virus. I. Coupled inactivation rates of hemagglutinating and neuraminidase activities.
The thermal stability of Newcastle disease virus has been characterized in terms of the rate constants for inactivation of hemagglutinating activity (HA), neuraminidase activity (NA), and infectivity. Inactivation of HA results in the concomitant loss of NA. Infectivity, however, is much more thermolabile. Disintegration of the virus particle is not responsible for the identical rate constants ...
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Infection of L cells with Newcastle disease virus (NDV) results in abortive replication, with the production of very few plaque-forming units (PFU) of virus per cell (W. C. Wilcox, Virology 9:30, 1959; K. Paucker et al., Virology 17:301, 1962). It is known that interferon is synthesized by L cells infected with NDV, and the possibility exists that this endogenously produced inhibitor may be res...
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Avian influenza viruses (AIV) and Newcastle disease viruses (NDV) of high pathogenicity cause severe systemic disease with high mortality in chickens and can be isolated from the meat of infected chickens. Although AIV and NDV strains of low pathogenicity are typically not present in chicken meat, virus particles in respiratory secretions or feces are possible sources of carcass contamination. ...
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Newcastle disease (ND) is a major threat to poultry industry production throughout developing countries. The Newcastle disease viruses (NDVs) infecting industrialized and indigenous poultry in Iran are velogenic strains and responsible for the frequent outbreaks of ND in poultry farms even in vaccinated flocks causing serious economic losses in the commercial and indigenous poultry. However, va...
متن کاملStudies on Newcastle Disease Virus
1. It is likely that certain tailed and filamentous particles seen on electron microscope examination of partially purified saline suspensions of Newcastle virus are the individual virus particles because: (a) They have a highly characteristic shape not seen in other virus preparations. (b) They are present whenever the virus is present in high concentration. (c) Their size agrees with the size...
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ژورنال
عنوان ژورنال: Applied Microbiology
سال: 1970
ISSN: 0003-6919
DOI: 10.1128/am.19.3.451-454.1970