title: A clinical trial of the effects of oral beta-carotene on the responses of human skin to solar radiation.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D002338:Carotenoids / Q000008:administration & dosage / Q000494:pharmacology*; D002986:Clinical Trials as Topic; D004307:Dose-Response Relationship, Radiation; D004890:Erythema / Q000517:prevention & control; D006801:Humans; D008297:Male; D008875:Middle Aged; D010858:Pigmentation; D010919:Placebos; D011830:Radiation Effects; D011837:Radiation-Protective Agents / Q000494:pharmacology*; D012867:Skin / Q000187:drug effects*; D013471:Sunburn / Q000517:prevention & control; D013472:Sunlight; D013997:Time Factors
chemical_list: D010919:Placebos; D011837:Radiation-Protective Agents; D002338:Carotenoids