title: The basis of instability of a revertant of the gal3 insertion of Escherichia coli.
mesh_terms: D004260:DNA Repair; D004926:Escherichia coli / Q000235:genetics* / Q000648:ultrastructure; D005690:Galactose / Q000235:genetics; D008854:Microscopy, Electron; D009154:Mutation; D009876:Operon
chemical_list: D005690:Galactose