Cannabis roots.
D002188:Cannabis / Q000627:therapeutic use*; D004487:Edema / Q000188:drug therapy*; D006321:Heart / Q000187:drug effects*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007198:Indians, North American; D008519:Medicine, Traditional; D008517:Phytotherapy; D014481:United States