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Histological analysis of fracture calluses. (A) Representative H&E staining images (scale bars = 1000 μm). (B) Quantitative assessment of fracture callus area, cartilage area, and the percentage of cartilage in the fracture calluses (n = 5–6). (C) Representative safranin O staining images. Outlined areas are magnified (scale bars = 1000 μm [left] and 200 μm [right]).
