Figure 4.

Fluorescent images of skin slices and fluorescent ABU values of the dermis layer at the fixed times of 0.5, 2 and 4 h after the application of the formulation with (2.5 μg/mL) NR dye. a Fluorescent images of skin slices applied with a formulation of GE; b fluorescent images of skin slices applied with formulations of LNE and c distribution of fluorescent ABU values in the dermis layer (*p < 0.01, mean SD,n = 3)

Zhou et al. Nanoscale Research Letters 2009 5:224-230   doi:10.1007/s11671-009-9469-5