Fig. 5From: Administration of allogeneic mesenchymal stem cells in lengthening phase accelerates early bone consolidation in rat distraction osteogenesis modelRepresentative histological images and the quantitative results of the distraction regenerate in the DO animals. Animals were treated with single injection of MSCs on day 3 (D3), day 6 (D6), or day 10 (D10), or one injection of MSCs on day 3, day 6, and day 10 (triple). a Samples were stained with H&E, Safranin O & Fast Green (SO & FG), or immunohistochemical staining with osteocalcin expression (OCN). Arrows indicate the unmineralized tissue. Data were shown as mean ± SD (n = 8). b Quantitative results of unmineralized tissue per DO regenerate. c Quantitative results of OCN-positive expressing tissue area per DO regenerate. *p < 0.05, **p < 0.01, ***p < 0.001 vs. CONBack to article page