Roger Charles Louis Guillemin was a French-American neuroscientist. He received the National Medal of Science in 1976, and the Nobel Prize for Medicine in 1977 for his work on neurohormones, sharing the prize that year with Andrew Schally and Rosalyn Sussman Yalow.

Andrzej Viktor "Andrew" Schally is an American endocrinologist of Polish ancestry, who was a corecipient, with Roger Guillemin and Rosalyn Sussman Yalow, of the Nobel Prize in Physiology or Medicine. This award recognized his research in the discovery that the hypothalamus controls hormone production and release by the pituitary gland, which controls the regulation of other hormones in the body. Later in life, Schally utilized his knowledge of hypothalamic hormones to research possible methods for birth control and cancer treatment.