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Increased expressions of USP14, USP21 and UCHL5 deubiquitinating enzymes in chondrosarcoma cells (A and B) compared to those in normal human cartilage (C-H). Tissue array slides were subjected to immunohistochemical analysis by using anti-USP14, anti-USP21 and anti-UCHL5 antibodies; all sections were digitally processed at 200 × magnification.
