TOPICS: Osteoblasts, mesenchymal stem cells, periosteum, hydroxyapatite, type I collagen, osteogenesis imperfecta, bone-specific alkaline phosphatase (BAP), osteoclasts, OPG, estrogen, OPG:RANKL ratio, bone marrow, M-CSF, RANKL, IL-1, parathyroid hormone (PTH), bone density, osteoclast:osteoblast activity ratio
