title: Effect of paramagnetic ions upon formation of spore photoproduct in DNA irradiated with UV at -196 degrees C.
mesh_terms: D002845:Chromatography; D004269:DNA, Bacterial / Q000528:radiation effects*; D004926:Escherichia coli / Q000187:drug effects; D008274:Magnesium / Q000494:pharmacology*; D008345:Manganese / Q000494:pharmacology*; D011830:Radiation Effects; D013171:Spores, Bacterial / Q000187:drug effects; D013941:Thymine / Q000032:analysis; D014316:Tritium; D014466:Ultraviolet Rays; D014498:Uracil / Q000032:analysis
chemical_list: D004269:DNA, Bacterial; D014316:Tritium; D008345:Manganese; D014498:Uracil; D008274:Magnesium; D013941:Thymine