FIGURE 13.

Reconstitution studies. Effect of PL oxidation versus protein oxidation on surface area reduction. The bar graph shows the percentage of surface area reduction required for the films to attain a minimum surface tension near 0 from 20 mN/m during the 21st dynamic cycling. Extrapolated compressions of >100% were estimated for those films that could not attain low minima during compression. Samples are as in Fig. 9. Data are the average of three independent experiments. Comparisons among the samples were conducted using Tukey's studentized range (highly significant difference) test. Letters A–E represent comparisons among samples within Figs 13 and 14. Means with the same letter are not significantly different for p < 0.05.