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Glycosaminoglycan, total collagen and matrix metalloproteinase (MMP) activity in the supernatants of MSC aggregate cultures and healthy tendon scaffold cultures. Asterisks indicate significant differences between groups with p < 0.01 (**). Significant differences over time are indicated by paragraph symbols for healthy tendon scaffold cultures (p < 0.05). Data were obtained with MSCs from n = 6 donors.
