title: Scanning electron microscopy of dental calculi.
mesh_terms: D001031:Apatites; D001419:Bacteria / Q000648:ultrastructure; D003728:Dental Calculus / Q000382:microbiology / Q000473:pathology*; D006801:Humans; D008855:Microscopy, Electron, Scanning
chemical_list: D001031:Apatites