title: Drug development for "orphan" diseases.
mesh_terms: D004345:Drug Industry; D007883:Legislation, Medical / Q000639:trends*; D009316:National Institutes of Health (U.S.); D004364:Pharmaceutical Preparations; D012106:Research; D014481:United States; D014486:United States Food and Drug Administration
chemical_list: D004364:Pharmaceutical Preparations