Fig. 6From: Dual growth factor-modified microspheres nesting human-derived umbilical cord mesenchymal stem cells for bone regenerationHematoxylin–eosin (HE) staining and Masson staining of cranial bone defect repair in rats at week 4 and week 8. m: microsphere residue, FT: fibrous tissue, NB: new bone, blue arrow: blood vesselBack to article page