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Co-expression of DKK-1 and SOST in OA trabecular bone. Representative staining of serial sections of trabecular bone in core taken from region of partial cartilage defect. a H&E staining, b IgG negative staining, c, e, g SOST immunostaining, d, f, h DKK-1 immunostaining. a, b ×4 and c–f ×10, g–h ×20 magnification
