title: [DNA chain division by irradiation and its rejoining].
mesh_terms: D000818:Animals; D002499:Centrifugation, Density Gradient; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004247:DNA / Q000502:physiology* / Q000528:radiation effects*; D066298:In Vitro Techniques; D007739:L Cells / Q000032:analysis / Q000528:radiation effects; D051379:Mice; D009713:Nucleotidyltransferases / Q000502:physiology; D011830:Radiation Effects; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D014316:Tritium; D004247:DNA; D009713:Nucleotidyltransferases; D013936:Thymidine