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mGRP morphology and viability. (a) Bright-field images of hydrogel-scaffolded mGRPs in four composite hydrogel formulations (day 4). (b) Comparison of cell spread areas for each formulation (n = 6 fields per formulation, 3 independent data sets, day 4). (c) Cell proliferation of hydrogel scaffolded mGRPs and control. (d) GFP+ fluorescence images of scaffolded mGRPs in 10 mg/mL hydrogel formulation. *p < 0.05, (n = 4). Scale bar = 100 μm.
