Metchnikoff, Élie (1845–1916)
Russian microbiologist who shared the 1908 Nobel Prize in Physiology or
Medicine with Paul Ehrlich for his work
on the mechanism of immunity, which included
the discovery that leukocytes (white blood
cells) are important in the body's resistance to infection and disease.
Metchnikoff was also noted for his theories concerning longevity. He wrote
Immunity in Infectious Diseases (1905).