title: Effects of long ultraviolet rays on human skin: photoprotective or photoaugmentative?
mesh_terms: D000328:Adult; D001345:Autoradiography; D001706:Biopsy; D004260:DNA Repair; D006801:Humans; D008297:Male; D008543:Melanins; D010787:Photosensitivity Disorders / Q000209:etiology / Q000517:prevention & control; D010858:Pigmentation / Q000528:radiation effects; D011830:Radiation Effects; D012867:Skin / Q000473:pathology / Q000528:radiation effects*; D013471:Sunburn / Q000209:etiology / Q000517:prevention & control; D013936:Thymidine / Q000378:metabolism; D014316:Tritium; D014466:Ultraviolet Rays
chemical_list: D008543:Melanins; D014316:Tritium; D013936:Thymidine