title: Ultraviolet and gamma-ray-induced free-radical reactions of nucleic acid constituents. Selectivity of some reactions for purines. Suppression of the reactivity of pyrimidines.
mesh_terms: D005720:Gamma Rays; D011684:Purine Nucleosides / Q000528:radiation effects; D011685:Purine Nucleotides / Q000528:radiation effects; D011687:Purines / Q000528:radiation effects*; D011741:Pyrimidine Nucleosides / Q000528:radiation effects; D011742:Pyrimidine Nucleotides / Q000528:radiation effects; D011743:Pyrimidines / Q000528:radiation effects*; D011839:Radiation, Ionizing; D014466:Ultraviolet Rays
chemical_list: D011684:Purine Nucleosides; D011685:Purine Nucleotides; D011687:Purines; D011741:Pyrimidine Nucleosides; D011742:Pyrimidine Nucleotides; D011743:Pyrimidines