The circle of Willis.
Wolpert
S M
SM
Tufts University School of Medicine, Boston, Mass, USA.
D002941:Circle of Willis; D004739:England; D004850:Eponyms; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D006801:Humans; D009445:Neuroanatomy / Q000266:history