What is a brain, and who said so?
D001921:Brain / Q000033:anatomy & histology / Q000502:physiology; D004014:Dictionaries as Topic; D004739:England; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D009626:Terminology as Topic; D014481:United States