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Bone Marrow Progenitors. Osteoblast Precursor. Osteoclast Precursor. Glucocorticoids. Estrogen Calcitonin. -. -. Estrogen Androgens GH/IGF-1. 1,25 OHD PTH. Thyroxine Vitamin A. +. +. Osteoclast. Osteoblast. New Bone Formation. Bone resorption. Osteocyte.
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Bone Marrow Progenitors Osteoblast Precursor Osteoclast Precursor Glucocorticoids Estrogen Calcitonin - - Estrogen Androgens GH/IGF-1 1,25 OHD PTH Thyroxine Vitamin A + + Osteoclast Osteoblast New Bone Formation Bone resorption Osteocyte