title: Beta carotene to prevent skin cancer.
mesh_terms: D002338:Carotenoids / Q000008:administration & dosage / Q000627:therapeutic use*; D004032:Diet; D006801:Humans; D015474:Isotretinoin / Q000627:therapeutic use; D012878:Skin Neoplasms / Q000517:prevention & control*; D019207:beta Carotene
chemical_list: D019207:beta Carotene; D002338:Carotenoids; D015474:Isotretinoin