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Neighbor-joining tree inferred using MEGA v5.0 based on the sequences of 16S rRNA genes, showing the phylogenetic relationships among strains P4IIIA (A), MPV12 (B), P1III2, P4V6, P2III5 (C), and related species. Bootstrap analysis values for 1000 replicates are shown at the nodes, only for values greater than 50. The scale bars indicate the number of substitutions per nucleotide position.
