title: Structure and composition of urinary calculi.
mesh_terms: D001031:Apatites / Q000032:analysis; D002118:Calcium / Q000032:analysis; D002130:Calcium Phosphates / Q000032:analysis; D006801:Humans; D008274:Magnesium / Q000032:analysis; D010070:Oxalates / Q000032:analysis; D014514:Ureteral Calculi / Q000378:metabolism*; D014527:Uric Acid / Q000032:analysis
chemical_list: D001031:Apatites; D002130:Calcium Phosphates; D010070:Oxalates; D014527:Uric Acid; D008274:Magnesium; D002118:Calcium