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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: Biomaterials. 2010 Mar 19;31(17):4639–4656. doi: 10.1016/j.biomaterials.2010.02.044

Fig. 10.

Fig. 10

Preparation of cell-adhesive PEG hydrogels by Click chemistry between 4-arm-PEG acetylene (4-PEG-Ace) and cell adhesive peptide diazide (CAP-2N3) in the presence of copper (II) sulfate and sodium ascorbate.