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. Author manuscript; available in PMC: 2016 Jan 31.
Published in final edited form as: Acta Biomater. 2014 Nov 8;13:88–100. doi: 10.1016/j.actbio.2014.11.002

Fig 1.

Fig 1

Illustration of the synthesis of gelatin/tyramine/heparin (G/T/H) hydrogels. (a) Synthesis of gelatin/tyramine (G/T) by the coupling of the -COOH in the gelatin chains with the −NH2 in the tyramine. (b) Synthesis of G/T/H conjugates by the condensation of the -COOH in the heparin and the −NH2 in the gelatin. (c) Addition of HRP and H2O2 to form injectable G/T/H hydrogels.