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Background Infectious bursal disease (IBD) is an acute contagious immunosuppressive disease which lead to acute bursal injury and immune dysfunction in poultry. It has caused heavy economic losses in the commercial poultry industry for many years in worldwide. Attenuated live vaccine has widely used in poultry showing some promising signs against IBDV infection. But it has defects such as generating...
Infectious bursal disease virus (IBDV) is a highly contagious disease that results in enormous economic losses in the global poultry sector. Lactic acid bacteria are an appealing vehicle for the safe and effective delivery of heterologous protein antigens. Oral administration of the commensal bacterium Lactococcus lactis expressing recombinant fusion proteins has been used to elicit mucosal and systemic...
Infectious bursal disease virus (IBDV) is an important immunosuppressive virus of chickens. Although the gene functions of IBDV have been well characterized, the host responses during IBDV infection remain much poor. In the present study, casein kinase 1 alpha (CK1α), a novel VP2-associated protein, was down-regulated during IBDV replication in DF1 cells. Further experiments showed that siRNA-mediated...
To test whether amino acid mutations in the PBC and PHI loops of VP2 are involved in the replication and virulence of infectious bursal disease virus (IBDV), a pair of viruses, namely the moderately virulent IBDV (rGx-F9VP2) and the attenuated strain (rGt), were used. Residue mutations A222P (PBC) and S330R (PHI), selected by sequence comparison, were introduced individually into rGx-F9VP2 by using...
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