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Evolutionary placement of N. meningitidis DNA sequences from enriched urine specimens (red dots) on a phylogenetic tree of the U.S. NmNG urethritis clade that includes isolates (blue dots) from the same cases as the specimens. Purple dots indicate that the specimen was placed with the isolate on the tree. The inset shows detail for the boxed branch. Bar, 10−4 substitutions per site. Distances are reported in Table S5.
