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Mechanical properties. The measured quasi-static (A and B) and dynamic (C–E) properties of GF (hatched bars), GF coated in fibronectin (dark blue bars), and GF coated in fibronectin and cultured with ATDC5 cells (light blue bars) for 28 days. Fibronectin changed the elasticity of the composite (i.e., modulus values), but did not increase the viscoelastic properties (stress relaxation and phase shift).
