title: Mineral and collagen fiber orientation in human secondary osteons.
abstract: Scanning electron microscopy and x-ray microdiffraction studies were conducted on single isolated osteons appearing "bright," "dark" and "intermediate" under crossed polaroids and the orientations of collagen fibers and crystallites within them determined.
mesh_terms: D003094:Collagen; D005269:Femur / Q000648:ultrastructure; D006253:Haversian System / Q000648:ultrastructure*; D006801:Humans; D008855:Microscopy, Electron, Scanning; D008903:Minerals; D013977:Tibia / Q000648:ultrastructure; D014961:X-Ray Diffraction
chemical_list: D008903:Minerals; D003094:Collagen