title: An ultrasensitive isotope dilution method for the determination of L-amino acids.
mesh_terms: D000596:Amino Acids / Q000032:analysis*; D001322:Autoanalysis; D002021:Buffers; D002247:Carbon Isotopes; D004926:Escherichia coli; D006863:Hydrogen-Ion Concentration; D008722:Methods; D008832:Microchemistry; D010455:Peptides / Q000032:analysis; D010649:Phenylalanine; D011392:Proline / Q000032:analysis; D012329:RNA, Bacterial; D012343:RNA, Transfer; D011865:Radioisotope Dilution Technique; D013237:Stereoisomerism; D013997:Time Factors; D014633:Valine / Q000032:analysis
chemical_list: D000596:Amino Acids; D002021:Buffers; D002247:Carbon Isotopes; D010455:Peptides; D012329:RNA, Bacterial; D010649:Phenylalanine; D012343:RNA, Transfer; D011392:Proline; D014633:Valine