FIG. 3.

Adherence of fluorescently labeled ncaA mutant (gray plot) or wild-type (black dashed plot) H. ducreyi to immobilized type I collagen. Adherence at each concentration of collagen was tested eight times in each assay, and adherence assays were performed three times for each strain. The data presented were averaged from the three assays, and error bars depict standard errors of the means. All values except the lowest (0.002 μg/ml collagen) were significantly different (all P < 0.05).