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. Author manuscript; available in PMC: 2017 Feb 4.
Published in final edited form as: Adv Healthc Mater. 2015 Dec 7;5(3):305–310. doi: 10.1002/adhm.201500778

Figure 1.

Figure 1

Structure of the (A) photolabile PEG-DPA and (B) non-photolabile PEG-DA macromers used in this study. (C) Schematic of photolabile hydrogel formation and subsequent siRNA release upon the degradation of hydrogel network in aqueous media in the absence and presence of an external UV light source.