نتایج جستجو برای: infectious bronchitis virus
تعداد نتایج: 476436 فیلتر نتایج به سال:
The recent finding that the E1 glycoproteins of murine coronaviruses contain only O-linked oligosaccharides suggested that this unusual modification might be a distinguishing feature of coronaviruses and might play an essential role in the life cycle of this family of viruses. To examine these possibilities, we analyzed the oligosaccharide moieties of the membrane proteins of the avian coronavi...
a study has been carried out for determining of cross-immunity between massachusetts (mass) m41 and iranian ir/773/2001 (793/b) strains of infectious bronchitis virus. two groups of 20 three weeks old spf chickens vaccinated subcutaneously with two oil-emulsions inactivated infectious bronchitis vaccines (mass m41 and iranian ir/773/2001 strains) that had been manufactured in razi institute in ...
We describe the emergence of a nephropathogenic avian infectious bronchitis virus (IBV) with a novel genotype in India. The Indian IBV isolate exhibited a relatively high degree of sequence divergence with reference strains. The highest homology was observed with strain 6/82 (68%) and the least homology with strain Mex/1765/99 (34.3%).
Unlike most world areas of massive poultry exploitation, Infectious Bronchitis in New Zealand has not been a threat for broilers or younger birds in rearing. The nature of the local strain of Infectious Bronchitis virus (IBV) has not shown to be as virulent as the classic or variant strains that constantly ravage the poultry industry of North and Latin America, Europe and Asia. No mortality has...
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