title: Proceedings: Acid and alkaline urinary inorganic pyrophosphatase in the formation of calcium-containing urinary calculi.
mesh_terms: D002118:Calcium / Q000378:metabolism*; D006801:Humans; D011755:Pyrophosphatases / Q000502:physiology*; D014545:Urinary Calculi / Q000201:enzymology*
chemical_list: D011755:Pyrophosphatases; D002118:Calcium