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Neighbor-joining phylogenetic tree obtained from four concatenated intergenic spacer sequences (S1, S2, S3, and S4) of 82 F. tularensis strains. Strains belonging to each MST genotype are indicated within parentheses. On the right, genotypes delineated by using MLVA are indicated. Genotypes that do not group the same strains when using both methods are indicated (red). (Arrows) Repartition of strains according to the method used.
