title: An improved color reagent for use in Barrett's assay of Cathepsin B.
mesh_terms: D015081:2-Naphthylamine; D002403:Cathepsins / Q000032:analysis*; D003124:Colorimetry / Q000379:methods; D007202:Indicators and Reagents; D008832:Microchemistry
chemical_list: D007202:Indicators and Reagents; D015081:2-Naphthylamine; D002403:Cathepsins