title: The psoralens. An historical perspective.
mesh_terms: D003374:Coumarins / Q000627:therapeutic use*; D004534:Egypt; D005363:Ficusin / Q000266:history / Q000627:therapeutic use*; D049673:History, 20th Century; D049690:History, Ancient; D049691:History, Medieval; D049711:History, Modern 1601-; D006801:Humans; D008730:Methoxsalen / Q000627:therapeutic use*; D010936:Plant Extracts / Q000627:therapeutic use*; D010946:Plants, Medicinal; D011565:Psoriasis / Q000188:drug therapy; D014481:United States; D014820:Vitiligo / Q000188:drug therapy
chemical_list: D003374:Coumarins; D010936:Plant Extracts; D005363:Ficusin; D008730:Methoxsalen