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Relative gene expression of matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) in MSC aggregate cultures and healthy tendon scaffold cultures. Asterisks indicate significant differences between groups with p < 0.05 (*) or p < 0.01 (**). Significant differences over time are indicated by hashmarks for aggregate cultures and by paragraph symbols for healthy tendon scaffold cultures (p < 0.05). Data were obtained with MSCs from n = 6 donors.
