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Phylogenetic tree of enterococci based on comparative analysis of the 16S rDNA sequences, showing the relationship among Enterococcus sp. nov. CDC PNS-E1, Enterococcus sp. nov. CDC PNS-E2, Enterococcus sp. nov. CDC PNS-E3, other enterococcal species, and species of related genera. The limit criterion to show the bootstrap numbers was above 85%.
