id author title date pages extension mime words sentences flesch summary cache txt cord-322410-k23engcx Naguib, Mahmoud M. New real time and conventional RT-PCRs for updated molecular diagnosis of infectious bronchitis virus infection (IBV) in chickens in Egypt associated with frequent co-infections with avian influenza and Newcastle Disease viruses 2017-03-21 .txt text/plain 5012 259 52 title: New real time and conventional RT-PCRs for updated molecular diagnosis of infectious bronchitis virus infection (IBV) in chickens in Egypt associated with frequent co-infections with avian influenza and Newcastle Disease viruses Conventional RT-PCRs amplifying hypervariable regions (HVRs 1–2 and 3) of the IBV S1 gene were developed and amplificates used for nucleotide sequence-based typing of IBV field strains in Egyptian chickens directly from clinical samples. The specificity of RT-qPCR primer set was evaluated by examining different avian respiratory viruses circulating in poultry in Egypt including AIV H5N1, H9N2 and NDV as well as different coronaviruses including a panel of IBV reference strains as listed in the materials section. Within HVR 1, 2 sequences, however, the existence of two distinct Table 3 RT-qPCRs reveal frequent co-infections in Egyptian poultry samples with avian influenza (AIV), Newcastle Disease (NDV) and infectious bronchitis viruses (IBV). ./cache/cord-322410-k23engcx.txt ./txt/cord-322410-k23engcx.txt