title: Conformation of U.V.-irradiated DNA.
mesh_terms: D004269:DNA, Bacterial / Q000528:radiation effects*; D004926:Escherichia coli; D008854:Microscopy, Electron; D011830:Radiation Effects; D013053:Spectrophotometry; D014461:Ultracentrifugation; D014466:Ultraviolet Rays
chemical_list: D004269:DNA, Bacterial