Figure 2. DPSC proliferation and differentiation. A) The percentage of cell proliferation after treatment with MTA and/or different concentrations of BMP-7. Data are presented as percentages of the control group. Different letters show statistically significant differences between groups (p<0.05). B) Inverted microscope images showing the morphology of cells in groups after 21 days of incubation. Cells in groups GM and DMEM/F12 presented a fibroblast-like morphology, while cells in other groups showed mainly nodule-like structures.