Fig. 4From: The paracrine effect of adipose-derived stem cells inhibits osteoarthritis progressionImmunohistochemical analysis for MMP-13 in cartilage. a Representive specimens 8 weeks after ACLT, evaluated for MMP-13 in medial femoral condyle. Medial sides of the knees from same individuals are shown. MMP-13 positive cells are indicated by arrows. Bars, 500 μm. b The proportion of MMP-13 positive cells (n = 6)Back to article page