SEARCH Articles Figures Tables Covalent Labelling of Proteins and DNA Isotopic Labelling of Biosynthetic Proteins Labeling of Proteins with Organometallic Complexes Strategies and Applications Labeling of the Target Protein Preparation of Colloidal Gold-Labeled Proteins Preparation of Mono-Disperse Gold Suspensions for Protein Labeling Protein labels Proteins labeling Proteins labelled Segmental Labeling of Proteins Spin labels of proteins