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Phylogenetic tree for DGGE bands (approximately 470 bp) belonging to members of the Thermodesulfobacteria from the Nakabusa and Yumata hot springs and for various Thermodesulfobacteria species, based on partial 16S rRNA gene sequences. The scale bar represents an estimated sequence divergence of 10%. The numbers at the nodes are bootstrap values determined from 1,000 iterations. The numbers in parentheses are accession numbers.
