Figure 4

Barrier function of bovine well-differentiated airway epithelial cells after infection by P. multocida. Filter-grown ALI cultures of differentiated bovine airway epithelial cells were infected by P. multocida at the indicated inoculation conditions (102 or 105 CFU; 1 or 4 h). At the times indicated, samples were analyzed for the intactness of the barrier function A by determining the transepithelial electrical resistance (TEER) and B by determining the permeability for FITC-labeled dextran.