Skin samples (n = 6) were collected and processed as described elsewhere [63 (link)]. Skin samples were sectioned at 5 μm and stained with periodic acid–Schiff (PAS; Merck) according to the manufacturer’s instructions. Images were obtained under a light microscope (Leica DM6000B) with a digital camera (Leica DFC280) and processed by Leica Application Suite V 2.5.0. Software.
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