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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Biomaterials. 2014 Apr 13;35(21):5453–5461. doi: 10.1016/j.biomaterials.2014.03.055

Fig. 1.

Fig. 1

Protease-degradable integrin-specific GFOGER-modified PEG hydrogels are synthesized with precise control of GFOGER density. (A) Chemical structure of branched 4-armed PEG-maleimide. (B) Synthesis of GFOGER- and BMP-2-functionalized hydrogels.