title: [DNA damage by ultraviolet ray and its repair: Background of xeroderma pigmentosum as a molecular disease].
mesh_terms: D004247:DNA / Q000528:radiation effects*; D004260:DNA Repair; D004261:DNA Replication / Q000528:radiation effects; D004720:Endonucleases / Q000494:pharmacology; D006801:Humans; D014466:Ultraviolet Rays; D014983:Xeroderma Pigmentosum / Q000378:metabolism*
chemical_list: D004247:DNA; D004720:Endonucleases