title: Lack of in vitro repair of x-ray-induced chain breaks in DNA by the polynucleotide-joining enzyme.
mesh_terms: D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D055598:Chemical Phenomena; D002621:Chemistry; D004269:DNA, Bacterial / Q000528:radiation effects*; D004926:Escherichia coli / Q000201:enzymology*; D066298:In Vitro Techniques; D010759:Phosphorus Isotopes; D011119:Polynucleotides; D011830:Radiation Effects
chemical_list: D002247:Carbon Isotopes; D004269:DNA, Bacterial; D010759:Phosphorus Isotopes; D011119:Polynucleotides