title: A specific method for determination of free tryptophan and endogenous tryptophan in Escherichia coli.
mesh_terms: D004926:Escherichia coli / Q000032:analysis*; D007211:Indoles / Q000032:analysis; D008722:Methods; D008832:Microchemistry; D013050:Spectrometry, Fluorescence; D014364:Tryptophan / Q000031:analogs & derivatives / Q000032:analysis*; D014368:Tryptophanase / Q000378:metabolism
chemical_list: D007211:Indoles; D014364:Tryptophan; D014368:Tryptophanase