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Phylogenetic relationship of the Peste des petits ruminants viruses isolated in Turkey in 2000 to other virus isolates. The tree is based on partial sequence data from the fusion (F) protein gene (7) and was derived by using the PHYLIP DNADIST and FITCH programs (22). Branch lengths are proportional to the genetic distances between viruses and the hypothetical common ancestor at the nodes in the tree. The bar represents nucleotide substitutions per position.
