Figure 5From: IGF-I increases markers of osteoblastic activity and reduces bone resorption via osteoprotegerin and RANK-ligandRANKL, PTHR1 and IGFBP-4 expressions. A. Bone gene and protein expression of RANKL. B. Bone gene and protein expression of PTHR1. C. Bone gene expression of IGFBP-4. *p < 0.05 vs CO, &p < 0.05 vs Hz. O.D., optical density.Back to article page