Fig. 2From: A 3D “sandwich” co-culture system with vascular niche supports mouse embryo development from E3.5 to E7.5 in vitroHuman placenta perivascular stem cells (hPPSC) 3D co-culture with hUVECs on Matrigel. A The morphology of hUVECs and hPPSCs; scale bar, 100 µm. B GFP-hUVECs and mCherry-hPPSCs were co-cultured on Matrigel for 96 h; scale bar, 500 µmBack to article page