title: Observations on the formation of a pigment by strains of Escherichia coli.
mesh_terms: D003470:Culture Media; D004926:Escherichia coli / Q000254:growth & development / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism; D010860:Pigments, Biological / Q000096:biosynthesis*; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D003470:Culture Media; D010860:Pigments, Biological; D014364:Tryptophan; D005947:Glucose