title: Differential spectrophotometric determination of tyrosine and tryptophan in mixtures [proceedings].
mesh_terms: D006863:Hydrogen-Ion Concentration; D013053:Spectrophotometry; D014364:Tryptophan / Q000032:analysis*; D014443:Tyrosine / Q000032:analysis*
chemical_list: D014443:Tyrosine; D014364:Tryptophan