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Neighbor-joining trees of 16S rRNA gene sequences obtained for Methylobacterium strains. Thirteen type strains of the genus Methylobacterium and 16 isolates were used for the phylogenetic analysis with the 16S rRNA gene. The bacterial isolates used in this study are shown in bold. The scale bar represents 0.005 substitutions per nucleotide position. Bacteria were divided into 5 groups based on phylogenetic relationships.
