FIG. 5.

Histological images illustrating the general morphological aspect of the alveolar bone surrounding the roots of the first molar at 4 weeks after surgery. Arrow heads point to the defect areas and the damaged roots. (A) Left mandible, defect covered with an empty scaffold (group B4-left); (B) right mandible, defect covered with a scaffold containing hMSCs (group B4-right); (C) left mandible, untreated defect (group A4-left); (D) right mandible, defect covered with an empty scaffold (group A4-right). Bars=100 μm. HE staining.