Fig. 4
From: The advances in nanomedicine for bone and cartilage repair
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12951-022-01342-8/MediaObjects/12951_2022_1342_Fig4_HTML.png)
A The composite fibres fabricated with a core–shell design are distinctive, and a fuzzy boundary between the core and shell implies good miscibility [148]. B mBMSCs were able to attach and spread well on the constructs [133]. C H&E staining results indicated that the PCL/gelatin composite electrospun scaffolds with crater-like structures showed a significantly higher affinity for cell infiltration [135]. D Micro-CT analysis showed that the composite scaffold group had more bone in-growth than the pure gelatin group [137]