genotyping of infectious bursal disease virus strains by restriction fragment length polymorphism analysis of the vp1, vp2, and vp3 genes.summary. this study aimed to genotype infectious bursal disease virus (ibdv) isolates from the minas gerais state poultry industry. rna was extracted from bursae obtained from field cases without passage or commercial vaccines. genetic subtyping of ibdv isolates and vaccine strains was carried out by the reverse transcriptase-polymerase chain reaction (rt-pcr) and restriction fragment length polymorphism (rflp) analysis. a 588-bp fragment in the vp1 gene, an 847-bp fragment in the vp2 gene, and ...200516404990
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