title: Selective photochemical alkylation of purines in DNA.
mesh_terms: D000433:1-Propanol; D000478:Alkylation; D001973:Bromodeoxyuridine; D002250:Carbon Radioisotopes; D002499:Centrifugation, Density Gradient; D002854:Chromatography, Paper; D004269:DNA, Bacterial / Q000528:radiation effects*; D004926:Escherichia coli; D009154:Mutation; D010179:Pancreas / Q000201:enzymology; D010777:Photochemistry; D011687:Purines / Q000528:radiation effects*; D011830:Radiation Effects; D012260:Ribonucleases; D013941:Thymine; D014316:Tritium; D014466:Ultraviolet Rays
chemical_list: D002250:Carbon Radioisotopes; D004269:DNA, Bacterial; D011687:Purines; D014316:Tritium; D000433:1-Propanol; D012260:Ribonucleases; D001973:Bromodeoxyuridine; D013941:Thymine