Differentiation of mGRPs. Expression of (a,a′) Olig2, (b,b′) GFAP, and (c,c′) Ki-67 in mGRPs engrafted with a 10 mg/mL hydrogel or saline at 4 weeks post-striatal transplantation. Shown are the merged marker/GFP+ images with separate staining and DAPI nuclear staining in insets. (d–f) Quantitative comparison of Olig2/GFAP/Ki-67 expression/co-localization between scaffolded and naked mGRP grafts. *p < 0.05, n = 5. Scale bar = 50 μm.