Elie Metchnikoff

Born near Kharkiv in 1845, Élie Metchnikoff was a Russian-born zoologist and microbiologist whose work helped lay the foundations of modern immunology. He is most closely associated with the discovery of phagocytosis—the process by which certain cells engulf and destroy harmful invaders—which became a major step forward in understanding how the immune system works.

Metchnikoff carried out research in several European centers and later became closely linked with the Pasteur Institute in Paris. In 1908, he shared the Nobel Prize in Physiology or Medicine with Paul Ehrlich for their work on immunity, recognition of ideas that shaped both laboratory science and medical practice.

Beyond the lab, he wrote for a wider public about human health, old age, and the possibility of longer life. That mix of scientific rigor and curiosity about everyday well-being gives his work a lasting appeal, especially for readers interested in the history of medicine and the big questions of how the body protects itself.