Fig. 5From: SFRP2 enhances the osteogenic differentiation of apical papilla stem cells by antagonizing the canonical WNT pathwayOverexpression of WNT1 inhibited the osteogenic differentiation capacity of SCAPs. a Western blot results confirmed the overexpression of WNT1 via retrovirus infection of SCAPs. Beta-actin was used as an internal control. b ALP activity. c Alizarin Red staining. d Quantitative analysis of calcium concentration. Student’s t test was performed to determine statistical significance. All error bars represent SD (n = 3). **p ≤ 0.01. (sigma unit: unit of measurement for ALP activity)Back to article page