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Patient 13. Skin biopsies of untreated abdominal striae distensae (A, C, E) and the same site 1 month after three times of treatment with nonablative fractional laser (B, D, F), Note the increases in the epidermal thickness and the amount of collagen and elastic fibers after laser treatment. (A, B) H&E, ×200, (C, D) Masson trichrome stain, ×200, (E, F) Miller's elastic stain, ×200.
