SEARCH Articles Figures Tables Distribution radio-labelled molecules Double labelling single protein molecules Double-labelled molecules Doubly labelling single protein molecules for FRET studies Electron ionization labeled molecules Fluorescence labelled polyelectrolyte molecules Imaging single molecule/label fluorescence Isotopically labeled molecules Labelled molecule approach Labelled molecules Labelled molecules Limits labeled molecules Proteins labelled protein molecules showing Radio-labelled molecules Reporter Molecules and Labeled Probes Spin-labelled molecules Technique of labelled molecules Use of Isotopically Labeled Molecules