FIG. 5.

TER (means ± standard deviations) across cultured rabbit corneal epithelial cells in vitro in the presence of the invasive P. aeruginosa strain 6294 (A) or the cytotoxic P. aeruginosa strains 6206 (B) and 19660 (C) with and without undiluted human tear fluid. The asterisk indicates that in cells infected with 6294, tear fluid significantly increased the TER compared to the TER observed with cells infected with bacteria in HBSS alone (P = 0.0006 at inoculation and P = 0.0001 at each time from 1 to 6 h, as determined by a t test).