title: PHYSICAL CHANGES AND MUTAGENESIS.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D004247:DNA; D004269:DNA, Bacterial; D004926:Escherichia coli; D008027:Light; D008660:Metabolism; D016296:Mutagenesis; D009154:Mutation; D011830:Radiation Effects; D012038:Regeneration; D013941:Thymine; D014466:Ultraviolet Rays
chemical_list: D004269:DNA, Bacterial; D004247:DNA; D013941:Thymine
keywords: CHEMISTRY; DNA, BACTERIAL; ESCHERICHIA COLI; LIGHT; METABOLISM; MUTATION; RADIATION EFFECTS; REGENERATION; THYMINE; ULTRAVIOLET RAYS