title: Use of a density gradient column in the analysis of urinary calculi.
mesh_terms: D002129:Calcium Oxalate / Q000032:analysis; D002130:Calcium Phosphates / Q000032:analysis; D002499:Centrifugation, Density Gradient; D005591:Chemical Fractionation / Q000379:methods*; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D006801:Humans; D006882:Hydroxyapatites / Q000032:analysis; D008274:Magnesium / Q000032:analysis; D017616:Magnesium Compounds; D010710:Phosphates / Q000032:analysis; D000069877:Struvite; D014527:Uric Acid / Q000032:analysis; D014545:Urinary Calculi; D014961:X-Ray Diffraction
chemical_list: D002130:Calcium Phosphates; D006882:Hydroxyapatites; D017616:Magnesium Compounds; D010710:Phosphates; D002129:Calcium Oxalate; D014527:Uric Acid; C016188:weddellite; D000069877:Struvite; D008274:Magnesium; C494366:calcium phosphate, dibasic, dihydrate