title: Light--a source of error in the fluorometric determination of tryptophan.
mesh_terms: D002854:Chromatography, Paper; D005452:Fluoresceins / Q000032:analysis*; D005470:Fluorometry / Q000592:standards*; D007477:Ions; D007501:Iron; D008027:Light; D013057:Spectrum Analysis; D013472:Sunlight; D014364:Tryptophan / Q000032:analysis*; D014466:Ultraviolet Rays
chemical_list: D005452:Fluoresceins; D007477:Ions; D014364:Tryptophan; D007501:Iron