FIG. 2.
Adherence to ECM proteins by H. influenzae strain DB117 expressing wild-type Hap or HapS243A and inhibition of adherence by anti-Haps antiserum. Adherence to fibronectin, laminin, and collagen IV was calculated by dividing the number of adherent bacteria by the number of inoculated bacteria. Error bars represent the mean ± standard error of the mean of measurements made in triplicate from representative experiments. Adherence was inhibited by increasing concentrations of antiserum RabK2, which reacts with Haps. A 1:100 dilution of preimmune rabbit serum had no effect on adherence. The x axis varies from one panel to the next.