FIG 6.
Murine infection phenotypes of BtΔcdaAC-cis(G175A) and BtΔcdaAC-cis(G175A)::cdaAC-cis(WT) strains. Groups of four mice were intradermally inoculated with 102 spirochetes of BtΔcdaAC-cis(G175A) (A) or BtΔcdaAC-cis(G175A)::cdaAC-cis(WT) (B). On days 3 to 14 postinfection, bacterial levels in the bloodstream were quantified by qPCR. Numbers above the graphs indicate individual mice in each experimental group, and error bars represent SEM. The dashed line indicates the LOD (104 spirochetes/ml).