title: Irradiation of circular DNA with 254 nm radiation or sensitization in the presence of Ag+: evidence for unwinding by photoproducts other than pyrimidine dimers.
mesh_terms: D004270:DNA, Circular / Q000528:radiation effects*; D004926:Escherichia coli; D010782:Photolysis; D011740:Pyrimidine Dimers / Q000528:radiation effects; D012834:Silver / Q000494:pharmacology*; D014466:Ultraviolet Rays
chemical_list: D004270:DNA, Circular; D011740:Pyrimidine Dimers; D012834:Silver