SEARCH Articles Figures Tables Activity assays enzyme-based An Assay for Enzyme-Catalyzed Polyanion Hydrolysis Based on Template-Directed Excimer Formation Based Assays Enzyme Assays Based on Mass Spectrometry Enzyme-based spectrophotometric assays Enzyme-linked immunosorbent assay based methods Enzymes assay HPLC-based enzyme assays Systems for Ligand Binding and Enzyme Inhibition Assays Based on Mass Spectrometry