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NPC encapsulation in the neutral and PLL-grafted PEGDA hydrogels for 7 and 14 days. (a) Fluorescence images stained using LIVE-DEAD assay. Scale bar of 200 μm is applicable to all. (b) Cell viability after encapsulation. *, p < 0.05 relative to other hydrogels at day 7. #, p <0.05 relative to other hydrogels at day 14 and hydrogel with ϕPLL of 0% at day 7.
