title: The role of ammonium sulfate precipitation in the removal of substances which interfere with enzymatic hydrolysis of conjugated estrogens in pregnancy urine.
mesh_terms: D011232:Chemical Precipitation; D004966:Estrogens, Conjugated (USP) / Q000652:urine*; D005260:Female; D005966:Glucuronidase / Q000037:antagonists & inhibitors*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007783:Lactones; D008722:Methods; D011247:Pregnancy; D011409:Propylene Glycols; D000644:Quaternary Ammonium Compounds / Q000494:pharmacology*; D013431:Sulfates
chemical_list: D004966:Estrogens, Conjugated (USP); D007783:Lactones; D011409:Propylene Glycols; D000644:Quaternary Ammonium Compounds; D013431:Sulfates; D005966:Glucuronidase