SEARCH Articles Figures Tables 18<). isotopic labelling with Carbon labeling Carbon, labeled Carbon-13 labelling Isotope isotopic labeling Isotope label Isotope-labelled Isotopes carbon Isotopic carbon Isotopic carbon monoxide Isotopic labeling Isotopic labeling with Isotopic labelled Isotopic labelling Isotopic labels Isotopic labels carbon Isotopical labeling Labeling with Labelled with Labelled with isotopic