title: The development of American medical research and the influence of John D. Rockefeller. I.
mesh_terms: D003132:Commerce; D004501:Education, Medical / Q000266:history; D049672:History, 19th Century; D007221:Industry; D012106:Research / Q000266:history*; D012109:Research Support as Topic; D012586:Science / Q000266:history; D014481:United States