Fig. 3From: Melatonin enhances osteogenic differentiation of dental pulp mesenchymal stem cells by regulating MAPK pathways and promotes the efficiency of bone regeneration in calvarial bone defectsCharacterization of surface marker profile for the melatonin-treated (100, 10, and 1 μM) and untreated DPSCs after 24 h of culture. Representative histograms show the percentages of positive cells (blue peaks) versus isotype controls (red peaks). (*p < 0.05, **p < 0.01)Back to article page