(a) Fluorescence changes of Laurdan (expressed in percent of maximal change) as a function of [enflurane] at 25°C. The curves correspond to DPPC concentrations of 0.9 (•), 2.8 (▾), 5.8 (♦), 9.5 (□), and 12.5 (+) mM. (b) Relation between the enflurane concentrations required to reach 10, 20, 50, 70, and 90% of the maximum fluorescence change as a function of lipid concentration (see Table 4 and text for details).