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Cluster analysis of BOX-PCR genomic fingerprints showing the genotypic diversity within the Rhodopseudomonas palustris and Rhodoferax fermentans isolates from the Haren (A) and De Biesbosch (B) sites. When a given genotype was isolated from both Haren A and Haren B, the location from which the strain was isolated is indicated by either A (for Haren A) or B (for Haren B) in parentheses. Abbreviations: Rps., Rhodopseudomonas; Rfx., Rhodoferax.
