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Histological examination. （A–a）HE staining；（A-b）Safranin O/fast green staining; （A-c） Masson's trichrome staining, scale bar = 100 μm; （B）Picrosirius red staining. The images were observed under normal inverted phase-contrast microscopy (a) and under polarised light microscopy (b), scale bar = 100 μm. Note: B = bone, T = tendon, IF = interface.
