FIG 1.
T. pallidum gDNA copies/μL for the 10-fold dilution series spiked samples enriched by the NEB+MDA or SWGA. Spiked samples were composed of a 10-fold dilution series of T. pallidum Nichols DNA and a constant concentration of human DNA. T. pallidum genome DNA (copies/μL of DNA extract) in samples pre- and postenrichment was estimated using PCR targeting the polA gene and are shown in the bar graph. The y axis has been log10-scaled for depiction of the nonenriched dilution series. Error bars represent the standard error among three replicate enriched T. pallidum samples.