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Sulfated glycosaminoglycan (S-GAG) measured in μg and normalized to volume of cartilage and per 24 hrs of culture time. Data was reported as the mean activity ± 1 SEM for: A. Medial femoral condyle; B. Lateral femoral condyle; C. Medial aspect of the tibial plateau; and D. Lateral aspect of the tibial plateau. (Kruskal-Wallis, *p < 0.002).
