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Schematic illustration of RGD/RDG-modified extracellular matrix (ECM) hydrogels. (A) Chondroitin sulfate (CS) and hyaluronic acid (HA) were reacted with glycidyl methacrylate (GMA) to form methacrylated CS and methacrylated HA. (B) ACRL-PEG-RGD/RDG was mixed with MeCS and MeHA, respectively, to make different groups of hydrogel. Color images available online at www.liebertpub.com/tea
