Fig. 1From: MMP-3 in the peripheral serum as a biomarker of knee osteoarthritis, 40 years after open total knee meniscectomyThe levels of MMP-3 in the peripheral serum correlates directly with the levels in the synovial fluid of the operated but not non-operated knee joints. a MMP-3 protein levels in the peripheral serum plotted against the levels within the synovial fluid of the operated or b non-operated knee joints (n = 8)Back to article page