title: Gas chromatographic and gas chromatographic--mass spectrometric studies on alpha-keto-gamma-methylthiobutyric acid in urine following ingestion of optical isomers of methionine.
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006801:Humans; D007536:Isomerism; D008297:Male; D008715:Methionine / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology* / Q000652:urine; D013997:Time Factors
chemical_list: C014632:2-keto-4-methylthiobutyric acid; D008715:Methionine