title: Orientation of apatite in single osteon samples as studied by pole figures.
mesh_terms: D001031:Apatites; D002113:Calcification, Physiologic; D003094:Collagen; D003460:Crystallization; D003461:Crystallography; D006253:Haversian System / Q000648:ultrastructure*; D006801:Humans; D014961:X-Ray Diffraction
chemical_list: D001031:Apatites; D003094:Collagen