title: A microbiological study of dental calculus. II. The in vitro calcification of microorganisms from dental calculus.
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D001431:Bacteriological Techniques; D002118:Calcium / Q000378:metabolism*; D003470:Culture Media; D003728:Dental Calculus / Q000382:microbiology*; D006801:Humans
chemical_list: D003470:Culture Media; D002118:Calcium