title: Detection, identification and structural investigation of biologically important compounds by secondary ion mass spectrometry.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D013058:Mass Spectrometry / Q000379:methods*; D010455:Peptides / Q000032:analysis; D004364:Pharmaceutical Preparations / Q000032:analysis; D014815:Vitamins / Q000032:analysis
chemical_list: D000596:Amino Acids; D010455:Peptides; D004364:Pharmaceutical Preparations; D014815:Vitamins