George Eliot and physiology.
D002245:Carbon Dioxide; D004739:England; D005602:France; D049672:History, 19th Century; D008093:Literature, Modern; D008513:Medicine in Literature / Q000266:history*; D010100:Oxygen; D010827:Physiology / Q000266:history*; D012119:Respiration
D002245:Carbon Dioxide; D010100:Oxygen