title: X-ray diffraction studies of the crystallinity of bone mineral in newly synthesized and density fractionated bone.
abstract: The crystallinity of bone mineral at different stages of maturation has been measured by quantitative X-ray diffraction methods. Crystallinity measurements were made on tibial mid-diaphyses from 17-day embryonic chicks, newly-formed periosteal bone from embryonic chicks, and density-fractionated bone from post-hatch chickens from 5 weeks to 2 years of age. For a given animal age and degree of mineralization, crystallinity increases with animal age, indicating that changes in bone mineral occur even after mineralization is complete or nearly complete.
mesh_terms: D000367:Age Factors; D000818:Animals; D001846:Bone Development; D001842:Bone and Bones / Q000032:analysis*; D002642:Chick Embryo; D002645:Chickens; D003460:Crystallization; D008903:Minerals / Q000032:analysis*; D014961:X-Ray Diffraction
chemical_list: D008903:Minerals