title: Mutants of Escherichia coli requiring methionine or vitamin B12.
authors.forename: B D
authors.initials: BD
authors.lastname: DAVIS
authors.forename: E S
authors.initials: ES
authors.lastname: MINGIOLI
mesh_terms: D001419:Bacteria; D045728:Corrinoids; D004926:Escherichia coli; D008715:Methionine; D014805:Vitamin B 12
chemical_list: D045728:Corrinoids; D008715:Methionine; D014805:Vitamin B 12
keywords: BACTERIA; METHIONINE; VITAMIN B12