Anatomy
Andreas Vesalius (1514–1564) (Latinized from Andries van Wezel), professor of anatomy at the University of Padua, is considered the founder of modern human anatomy. Originally from Brabant, Vesalius published the influential book "De humani corporis fabrica" ("the structure of the human body"), a large format book in seven volumes, in 1543. The accurate and intricately detailed illustrations, often in allegorical poses against Italianate landscapes, are thought to have been made by the artist Jan van Calcar, a pupil of Titian.
Louis Gayant
Louis Gayant (died 1673) was a French surgeon and anatomist. He was one of the founding members of the French Academy of Sciences.
He was born at Clermont-en-Beauvaisis, and became a leading anatomist, but remained unpublished. He is given credit in the discovery by Jean Pecquet of the Cisterna chyli.