title: Polarity of amber mutations and suppressed amber mutations in the galactose operon of E. coli.
mesh_terms: D004926:Escherichia coli; D005690:Galactose; D005796:Genes; D005809:Genes, Regulator; D005827:Genetics, Microbial; D009154:Mutation
chemical_list: D005690:Galactose