Fig. 2.

SHG images of the rat rear leg and back skin at several depths of the dermis and their FFT power plots. (a-d): SHG images of the rear leg skin at depths of 10 μm, 20 μm, 30 μm and 40 μm (Visualization 3 ^{(2.2MB, AVI)} ). (e-h): SHG images of the back skin at depths of 30 μm, 40 μm, 50 μm and 70 μm (Visualization 4 ^{(2.1MB, AVI)} ). (i) and (j) are power plots of FFT of the projected SHG images of rat rear leg and back skin respectively. Scale bar: 30 μm.