Crude extract of bacterially expressed, infectious bursal disease virus VPX/VP2 proteins induces protective immune response to the virus in chickens

crude extract of bacterially expressed, infectious bursal disease virus vpx/vp2 proteins induces protective immune response to the virus in chickens

infectious bursal disease virus (ibdv) infects young chickens and causes serious lose to the poultry industry, worldwide. previous attempts using purified bacterially expressed ibdv vp2 failed to elicit a protective immune response to the virus. this study was designed to investigate if the initial expressed protein contained neutralizing epitopes but became nonfunctional during purification st...

Characterization of a Highly Virulent Infectious Bursal Disease Virus

The Characteristics of an Ovine Lymphoid Cell-Line sensitive to Vaccinal Infectious Bursal Disease Virus Strain

Infectious bursal disease (IBD), also known as Gumboro disease, is a globally well-known disease with a significant socio-economic effect. For control of IBD, several commercial egg- and cell-based vaccines are prepared. The cell-based IBD vaccines are significantly cost-effective; however, it is essential to confirm their safety and efficacy. The main cell line used to product the cell-based I...

Construction of Recombinant Baculoviruses Expressing Infectious Bursal Disease Virus Main Protective Antigen and Their Immune Effects on Chickens

In order to overcome the limitations of conventional vaccines for infectious bursal disease virus (IBDV), we constructed recombinant dual expression system baculoviruses with VP2 and VP2/4/3, the main protective antigens of IBDV. We compared the immune effects of the baculoviruses in avian cells and detected their control effects on chickens with infectious bursal disease. We used Western blot ...

Comparison between Micro and Tube Virus Neutralization Tests for Detection of Serological Responses to Infectious Bursal Disease Virus Following Vaccination

Sequence analysis of the VP1 gene in three very virulent Iranian infectious bursal disease virus strains

Infectious bursal disease (IBD) is a highly contagious disease of chickens caused by the infectious bursal disease virus (IBDV). This study was conducted to characterize three IBDV strains from Iran. A reverse transcriptase-polymerase chain reaction (RT-PCR) procedure was used to amplify a 715-bp fragment of the VP1 gene from IBDV strains. Amplified VP1 fragments of the three Iranian IBDV strai...