title: Effect of pyrophosphate on the exchangeable calcium pool of hydroxyapatite crystals.
mesh_terms: D002118:Calcium; D002127:Calcium Isotopes; D011756:Diphosphates; D006882:Hydroxyapatites; D007474:Ion Exchange; D010759:Phosphorus Isotopes; D011755:Pyrophosphatases; D013997:Time Factors
chemical_list: D002127:Calcium Isotopes; D011756:Diphosphates; D006882:Hydroxyapatites; D010759:Phosphorus Isotopes; D011755:Pyrophosphatases; D002118:Calcium