title: Altered structure of ultraviolet-irradiated DNA: evidence for unwinding.
mesh_terms: D004278:DNA, Superhelical / Q000528:radiation effects; D004279:DNA, Viral / Q000528:radiation effects*; D004720:Endonucleases; D007700:Kinetics; D009690:Nucleic Acid Conformation / Q000528:radiation effects*; D013539:Simian virus 40; D015719:Single-Strand Specific DNA and RNA Endonucleases; D014466:Ultraviolet Rays
chemical_list: D004278:DNA, Superhelical; D004279:DNA, Viral; D004720:Endonucleases; D015719:Single-Strand Specific DNA and RNA Endonucleases