Results from hMSCs culture upon the PDMS sponges incorporating growth factors. Images taken at different depths to show cell penetration into pore (marked with dotted line). After a three-week culture process, cells (appreciated as prominent points in red) are well attached to the scaffold, have penetrated into the porous structure, and developed collagen (shown in red), helping to show the potential for tissue repair and cartilage generation of the proposed approach. Scale bar: 200 μm.
