Fig. 2.

The effect of treatment on barrier recovery. A: The typical elapse of barrier recovery over time for untreated and treated stripped sites for a single volunteer. Points are means (±SD) of three measurements within one site. Lines are point-to-point connections. The dotted line indicated the difference in time (Δt) between the untreated and treated curve at a designated recovery percentage. B: The AUCs/1000 for all volunteers. Lines connect data points of the same volunteer. A paired t-test showed significant increase at the treated sites. C: The Δt for all volunteers at recovery percentages between 5 and 90%. The data were nonnormally distributed and are shown as median and interquartile range. Deviations from zero were tested with a Wilcoxon signed-rank test.