title: More on urea and sickling.
mesh_terms: D000284:Administration, Oral; D000755:Anemia, Sickle Cell / Q000188:drug therapy* / Q000628:therapy; D001803:Blood Transfusion; D006801:Humans; D014508:Urea / Q000008:administration & dosage / Q000627:therapeutic use*
chemical_list: D014508:Urea