Microscopy from Scientific Research

B) Representative images of histological slides of condyles of each group. Safranin O staining (which colors proteoglycans red), counterstained with Fast Green FCF (which colors proteins green), and with Weigert's hematoxylin (which colors nuclei black) indicates Proteoglycan's depletion in the superficial zone of the cartilage of ACTL rats treated with PBS, and greater proteoglycans preservation in the superficial zone of the articular cartilage in the HA and ABA-HA treated joints

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