[Structure of the surface of erythrocytes in a clot in hemolytic disease of the newborn].

Scanning electron microscopy of blood clots of 6 patients with hemolytic disease of newborn has shown specific large ball-shaped red cells with small round excrescences on their surface. After hemosorption the number of such excrescences reduces but a great number of deformed cells appears. In experimental hemolysis of healthy newborns' blood no such excrescences have been detectable on the red cell surface.