Owing to their excellent biocompatibilities and toxicologically
safe degradation products [1,2], gelatin microspheres (GMSs) are
widely accepted as drug carriers to deliver various growth factors,
such as Bone Morphogenetic Protein 2 (BMP-2) [3,4], Vascular
Endothelial Growth Factor (VEGF) [4] and Fibroblast Growth Factor
(FGF) [5], stem cell [6] and plasmids [7] into tissues of the body to
facilitate tissue regeneration and remodeling.