Figure 5.

In vitro adhesion of L. lactis IBB109 and IBB417 strains to (A) abiotic and (B) biotic surfaces and to (C) Caco-2 cells. Adhesion to bare polystyren (abiotic) and mucin-coated polystyrene (biotic) microplates is expressed as optical density (OD₅₈₃ nm) of stained cells. Adhesion to Caco-2 cells is expressed as the number of viable adherent bacterial cells (CFU) per single Caco-2 cell. The mean values ± SD from three independent experiments are shown. Control L. lactis strains: IL1403 non-adherent strain (negative control); TIL448 adherent strain to mucin and IBB477 adherent strain to bare polystyrene (positive controls).