Edward Tyson
Edward Tyson (20 January 1651 – 1 August 1708) was a British scientist and physician, commonly regarded as the founder of modern comparative anatomy, which compares the anatomy between species.
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He was born at Clermont-en-Beauvaisis, and became a leading anatomist, but remained unpublished.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.