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Distribution of collagen types I, II, and X in engineered constructs cultured in + or T medium for 7 weeks. Chondrocyte- and MSC-laden constructs showed weak pericellular staining for type I collagen and intense staining for type II collagen regardless of initial seeding density or medium formulation. Type X collagen was not apparent in any group. Scale bar: 100 μm. Color images available online at www.liebertonline.com/ten.
