title: Effects of coumarin, pyronin Y, 6,9-dimethyl 2-methylthiopurine and caffeine on excision repair and recombination repair in Escherichia coli.
mesh_terms: D002110:Caffeine / Q000494:pharmacology*; D002470:Cell Survival / Q000187:drug effects; D003374:Coumarins / Q000494:pharmacology*; D004260:DNA Repair / Q000187:drug effects; D004269:DNA, Bacterial / Q000096:biosynthesis*; D004926:Escherichia coli / Q000187:drug effects* / Q000528:radiation effects; D011687:Purines / Q000494:pharmacology*; D000644:Quaternary Ammonium Compounds / Q000494:pharmacology; D011830:Radiation Effects; D011995:Recombination, Genetic / Q000187:drug effects*; D014466:Ultraviolet Rays; D014966:Xanthenes / Q000494:pharmacology*
chemical_list: D003374:Coumarins; D004269:DNA, Bacterial; D011687:Purines; D000644:Quaternary Ammonium Compounds; D014966:Xanthenes; D002110:Caffeine