title: High-resolution electron microscopy and crystallographic study of some biological apatites.
mesh_terms: D000567:Amelogenesis Imperfecta / Q000473:pathology*; D000818:Animals; D001031:Apatites; D003743:Dental Enamel / Q000648:ultrastructure*; D009050:Fluorosis, Dental / Q000473:pathology*; D006801:Humans; D008854:Microscopy, Electron; D012754:Sharks; D014961:X-Ray Diffraction
chemical_list: D001031:Apatites