Isotopic assay of nanomole amounts of nitrogen-15 labeled amino acids by collision-induced dissociation mass spectrometry.
D000596:Amino Acids / Q000032:analysis*; D013058:Mass Spectrometry / Q000379:methods; D008832:Microchemistry; D009587:Nitrogen Isotopes
D000596:Amino Acids; D009587:Nitrogen Isotopes