title: [Determination of urinary estrogen during normal pregnancy by isotope dilution method].
mesh_terms: D002854:Chromatography, Paper; D003124:Colorimetry; D004958:Estradiol / Q000652:urine; D004964:Estriol / Q000652:urine; D004967:Estrogens / Q000652:urine*; D004970:Estrone / Q000652:urine; D005260:Female; D005865:Gestational Age; D006801:Humans; D008722:Methods; D011247:Pregnancy; D011865:Radioisotope Dilution Technique; D014316:Tritium
chemical_list: D004967:Estrogens; D014316:Tritium; D004970:Estrone; D004958:Estradiol; D004964:Estriol