The pancreas.
Aronson
S M
SM
D000569:Americas; D000818:Animals; D003920:Diabetes Mellitus / Q000266:history*; D005060:Europe; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D006801:Humans; D007328:Insulin / Q000266:history*; D010179:Pancreas / Q000503:physiopathology*
D007328:Insulin