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Phylogenetic tree constructed on the basis of the full-length genomes of the IBV isolates and Turkey coronavirus (TCoV) reference strains using the neighbor-joining method. IBV strains ck/CH/LNM/091017, ck/CH/LHLJ/07VII, ck/CH/LDL/101212 and ck/CH/LHLJ/100902 are highlighted in bold. Numbers on the branches represent the percentage of 1000 bootstrap samples supporting the branch.
