(December 7, 1810 - January 11, 1882)
Theodor Schwann was a German physiologist. His many contributions to biology include the development of cell theory, the discovery of Schwann cells in the peripheral nervous system, the discovery and study of pepsin, the discovery of the organic nature of yeast, and the invention of the term metabolism.
(March 28, 1892 - July 18, 1968)
Corneille Jean François Heymans was a Flemish physiologist. He studied at the prestigious Jesuit College of Sainte Barbe after which he proceeded to Ghent University, where he obtained a doctor's degree in 1920.