SEARCH Articles Figures Tables 18<). isotopic labelling with Amino acids, labeling Amino isotope-labeled Amino isotopically labeled Cell amino acids Cells labelled Isotope isotopic labeling Isotope label Isotope stable isotopes Isotope-labeled amino acids Isotope-labelled Isotopes acids Isotopic labeling Isotopic labeling with Isotopic labelled Isotopic labelling Isotopic labels Isotopical labeling Labeling with Labelled with Labelled with isotopic Stable amino acids Stable cells Stable isotope Stable isotope labeled Stable isotope labeling Stable isotope labeling with amino acids Stable isotope labelling