Immunohistochemical staining (200 × magnification) and semiquantitative analysis of BMP-2 and OCN. (a,e) The model group showed slight BMP-2 immunoreactivity (BMP-2-IR) and OCN immunoreactivity (OCN-IR), and few osteoblasts. (b,f) In the CD group, increased BMP-2-IR, OCN-IR, and number of osteoblasts were observed. (c,g) The DFO group showed intense BMP-2-IR and OCN-IR which was concomitant with the increase in the number of osteoblasts. (d,h) Bar graphs showed the mean optical density of BMP-2 and OCN in bone marrow. Semiquantitative analysis was performed for eight sections (10 fields per section) in each group and the mean optical density was calculated. *P < 0.05 versus model group; #P < 0.05 versus CD group; n = 8. (A color version of this figure is available in the online journal.)