Urea and sickling.
D000755:Anemia, Sickle Cell / Q000188:drug therapy*; D055598:Chemical Phenomena; D002621:Chemistry; D006451:Hemoglobin, Sickle; D006801:Humans; D014508:Urea / Q000494:pharmacology* / Q000627:therapeutic use
D006451:Hemoglobin, Sickle; D014508:Urea