title: Psoralen and photoactivation.
mesh_terms: D004247:DNA; D003624:Darkness; D006801:Humans; D008730:Methoxsalen / Q000009:adverse effects / Q000627:therapeutic use*; D010778:Photochemotherapy / Q000009:adverse effects; D012306:Risk; D012878:Skin Neoplasms / Q000209:etiology; D014467:Ultraviolet Therapy
chemical_list: D004247:DNA; D008730:Methoxsalen