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Photoaging. (A) Ventral and dorsal region of the forearm. (B1) HFUS, longitudinal view. Decreased dermis echogenicity (➛). (B2) Discrete degeneration of collagen fibers. Hematoxylin & Eosin 10X. (C1) HFUS, longitudinal view. Subepidermal low echogenicity band (↑). (C2) Solar elastosis. Hematoxylin & Eosin 10X
