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Histological detection of articular cartilage degeneration after impact. Sections in the impact zone of rabbit femoral chondyles were stained using Safranin O and Fast Green: (A and B) Sham-operated controls, (C and D) impacted condyles at 24 hours (A and C) and 12 weeks (B and D) after impact injury. Magnification, 4–6x; scale bar = 200 µm.
