title: Photo-C4-cyclo-addition reactions to the nucleic acids.
mesh_terms: D000818:Animals; D001580:Benzopyrenes; D003374:Coumarins / Q000494:pharmacology; D003500:Cyclization; D004247:DNA / Q000528:radiation effects*; D005453:Fluorescence; D011564:Furocoumarins; D006168:Guinea Pigs; D006801:Humans; D009691:Nucleic Acid Denaturation; D009705:Nucleosides / Q000528:radiation effects; D010084:Oxidation-Reduction; D010777:Photochemistry; D010787:Photosensitivity Disorders; D012313:RNA / Q000528:radiation effects*; D011830:Radiation Effects; D012867:Skin / Q000528:radiation effects; D013056:Spectrophotometry, Ultraviolet; D014466:Ultraviolet Rays
chemical_list: D001580:Benzopyrenes; D003374:Coumarins; D011564:Furocoumarins; D009705:Nucleosides; D012313:RNA; D004247:DNA