[Erythrocyte interaction during aggregation according to scanning electron microscope findings].

Scanning electron microscopy was used to study red cell aggregation caused by intravascular injection of dextran (m. w. 500 000). Two types of aggregates were revealed. Type 1 was represented by aggregates of red cells with no substantial change in the form while type 2 by aggregates with the wrinkling of the surface of red cells and enlarged area of red cell surface contacts. Both types are prone to disaggregation after injection of rheopolyglucin.