Fig.7 In vitro biological performance of S+F-PDA@E2 scaffolds. (A) Live/dead fluorescence images for BMSCs cultured on bilayer scaffolds. (B) Cell viability of BMSCs on bilayer scaffolds after culture for 24 and 48h, respectively. (C) Proliferation of BMSCs on bilayer scaffolds. (D) F-actin and nucleus fluorescence images of BMSCs on bilayer scaffolds after culture for 1, 3 and 7 days, respectively.