FIG. 2.

(A and B) Adhesion of the fimbriate Hib strain 770235 fim+ and the nonfimbriate strain Hib 770235 fim− to fibronectin (Fn), HB-GAM, and BSA immobilized on glass slides. (C and D) Adhesion of recombinant E. coli HB101(pMH140) expressing Hib fimbriae, and of HB101(pEMBL8) with the vector plasmid alone, to target proteins. Bacteria were tested at concentrations of 10⁹/ml (A and B) and 10¹⁰/ml (C and D). The means and standard deviations of adherent bacteria in 20 microscopic fields of 1.6 × 10⁴ μm² are shown.