title: Impossible formation of twisted circular form DNA after infection with ultraviolet irradiated lambda phages.
mesh_terms: D003090:Coliphages / Q000528:radiation effects*; D004279:DNA, Viral / Q000096:biosynthesis*; D004926:Escherichia coli / Q000528:radiation effects; D010759:Phosphorus Isotopes; D011830:Radiation Effects; D013936:Thymidine / Q000378:metabolism; D014316:Tritium; D014466:Ultraviolet Rays
chemical_list: D004279:DNA, Viral; D010759:Phosphorus Isotopes; D014316:Tritium; D013936:Thymidine