[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.

[Electron microscopy study of the microorganism topography on plant roots].

The topography of microorganisms in the root cap zone and in the absorption zone was studied with 7-day-old wheat seedlings. No microorganisms were detected in the root cap zone. Individual microorganisms as well as their accumulations were registered in the absorption zone.

[Comparative ultrastructural study of the protonephridium of Eteone longa and the metanephridium of Lumbricus terrestris].

In the initial part of the protonephridium of E. longa specialized cells, cyrtocytes, are observed in addition to cells of the protonephridial duct among which dark and light cells are distinguished. The metanephridial duct of L.

[Study of invertebrate soft tissues by the smear technic in light and electron microscopy].

A soft tissue is smeared on the surface of an araldite plate, and after fixation is coated by an araldite film. After examination with the light microscope, the araldite slide may be distributed for histological or ultrathin serial processing. The method provides an adequate conservation of cellular structures.