Fig. 11From: Melatonin enhances osteogenic differentiation of dental pulp mesenchymal stem cells by regulating MAPK pathways and promotes the efficiency of bone regeneration in calvarial bone defectsMelatonin-preconditioning DPSCs promoted bone defect healing in vivo. Histological analysis of regenerative tissues with Masson’s trichrome staining. The black arrowheads indicate osteoblasts at the MBCP–new bone interface. Scale bar = 100 μm. (NB new bone, CT connective tissue, BM bone marrow, MBCP scaffold, DPSCs dental pulp mesenchymal stem cells, Mel melatonin)Back to article page