FIG. 7.

Adherence of C9.10 and C9.11 recA6 to epithelial cells. For 18 h prior to the assay, Gc were induced with IPTG as indicated below the x axis. Gc were incubated with the cultured cells for 2.5 h. Monolayers were washed, disrupted, and plated to allow the counting of cell-associated CFU. The number of cell-associated CFU for each strain was divided by the number of cell-associated CFU of nonpiliated control strain MS11-B2 to yield the relative adherence. Values represent the mean and standard error of at least three identical experiments. (A) Adherence to Chang conjunctival epithelial cells. (B) Adherence to primary urethral epithelial cells.