SEARCH Articles Figures Tables And isotopic labeling And isotopic labelling D-labeled Exchange isotopic H-D exchange H-exchange H-isotope exchange H/T exchange Isotope isotopic labeling Isotope label Isotope-labelled Isotopes exchange Isotopes: *H Isotopic exchange and Isotopic labeling Isotopic labelled Isotopic labelling Isotopic labels Isotopical labeling Labelling exchange