Figure 2.
Effect of energy intensity on sulforhodamine B release from light- (Lipo-PdPC) and ultrasound- (Lipo-PPIX) sensitive liposomes. The intensities were normalized with 100% defined as 264 mW/cm2 for light and 3 W/cm2 for ultrasound. (a) Effect of normalized energy intensity on dye release. (b–c) Effect of normalized energy intensity on normalized permeability (P*) of Lipo-PdPC (b) and Lipo-PPIX (c)). The curves are determined by Eqn 19. The sensitivity coefficient S is the slope of the curves. Data are means ± SD, N=4.