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. Author manuscript; available in PMC: 2020 Jul 15.
Published in final edited form as: Acta Biomater. 2019 Mar 23;93:97–110. doi: 10.1016/j.actbio.2019.03.046

Fig. 2:

Fig. 2:

A) Illustration of thiolated TGF-β3 tethering to PEG-NB via a photoclick reaction of thiol:norbornene. B) Illustration of PEG-NB-TGF crosslinked with an MMP-sensitive peptide in the presence of porcine chondrocytes with photoinitiator under UV light to form a 3D network. C) Experimental design for the in vitro and in vivo environments.