Pourfour du Petit's experiments on the origin of the sympathetic nerve.
D000715:Anatomy / Q000266:history*; D003391:Cranial Nerves / Q000033:anatomy & histology; D049670:History, 17th Century; D049671:History, 18th Century; D013564:Sympathetic Nervous System / Q000033:anatomy & histology*; D013900:Thoracic Nerves / Q000033:anatomy & histology