title: A simplified procedure to determine tryptophan residues in proteins.
mesh_terms: D007202:Indicators and Reagents; D011506:Proteins / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D014364:Tryptophan / Q000032:analysis*
chemical_list: D007202:Indicators and Reagents; D011506:Proteins; D014364:Tryptophan