title: Gas-chromatographic estimation of urinary vanilmandelic acid (VMA) and 3-methoxy-4-hydroxyphenylethylenglycol (MHPG) after their purification on Sephadex LH-20.
mesh_terms: D002849:Chromatography, Gas; D002850:Chromatography, Gel; D006018:Glycols / Q000652:urine*; D006801:Humans; D013058:Mass Spectrometry; D008722:Methods; D008734:Methoxyhydroxyphenylglycol / Q000652:urine*; D013997:Time Factors; D014642:Vanilmandelic Acid / Q000652:urine*
chemical_list: D006018:Glycols; D008734:Methoxyhydroxyphenylglycol; D014642:Vanilmandelic Acid