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16S rRNA-based phylogeny of haloalkaliphilic SRB from soda lakes within the Deltaproteobacteria (sequences are in bold). Numbers at the nodes indicate the percentage of bootstrap values for the clade of this group in 1000 replications (the values for maximum-likelihood method are given in parentheses). Only values above 70% are shown. Bar, 5 substitution per 100 nt. E. coli was used as an outgroup.
