Adaptation of Very Virulent Infectious Bursal Disease Virus to Chicken Embryonic Fibroblasts by Site-Directed Mutagenesis of Residues 279 and 284 of Viral Coat Protein VP2

Abstract excerpt

The full-length RNA genomes of a chicken embryonic fibroblast (CEF)-nonpermissive, very virulent infectious bursal disease virus (IBDV) (strain HK46) were amplified into cDNAs by reverse transcription-PCR. The full-length cDNAs were sequenced and subcloned into a eukaryotic expression vector, from which point mutations were introduced into the VP2 region by site-directed mutagenesis. The wild-type and mutated...

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