The coin is dedicated to 160th anniversary of Illia Mechnikov (1845 – 1916), an outstanding, world-famous scientist and the Nobel Prize winner (1908). Mechnikov is one of the founders of evolution embryology, immunology and microbiology, who had discovered the phagocytosis phenomenon, had developed the phagocytic theory of immunity (1883). And even now ideas of the scientist have contributed to development of various fields of biology and medicine. In circulation since December 29, 2005.