Fig. 6From: Matrix vesicles from dental follicle cells improve alveolar bone regeneration via activation of the PLC/PKC/MAPK pathwayImmunohistochemistrical evaluation of the frontier of the defects. A The expression of osteogenic proteins (ALP, OCN, OPN and MMP-2) was detected and the brown indicated positive sites. The red pentagons indicated positive regions of MMP-2. Scale bar: 100 mm. B Quantitative analysis of the expression level of the above proteins. *p < 0.05, **p < 0.01, ***p < 0.001Back to article page