Fig. 2From: 3D-printed PCL@BG scaffold integrated with SDF-1α-loaded hydrogel for enhancing local treatment of bone defects a Macroscopic view and (b) porosity of the scaffold. c SEM images of different scaffolds. The red arrows indicate BG particles. d SDF-1α cumulative release curve from the GelMA/SDF-1α@PCL/BG scaffold, n = 3Back to article page