title: The varying composition of the nucleus and peripheral layers of urinary calculi.
mesh_terms: D001031:Apatites / Q000032:analysis; D003553:Cystine / Q000032:analysis; D006801:Humans; D008855:Microscopy, Electron, Scanning; D008903:Minerals / Q000032:analysis; D010070:Oxalates / Q000032:analysis; D010710:Phosphates / Q000032:analysis; D014527:Uric Acid / Q000032:analysis; D014545:Urinary Calculi / Q000473:pathology*; D014961:X-Ray Diffraction
chemical_list: D001031:Apatites; D008903:Minerals; D010070:Oxalates; D010710:Phosphates; D014527:Uric Acid; D003553:Cystine