Contribution of Russian and foreign immunologists to the development of scientific knowledge about humans

The article is devoted to the contribution Of I. I. Mechnikov, P. Ehrlich, G. Koehler, and C. Milstein to the formation of scientific knowledge about man at the cellular-histological level. Thanks to these scientists, a complete view of the state of the body in normal and pathological conditions was formed, moreover, scientists have come to an opinion that any diseases can lead to changes in the properties of the immune system.