[Changes in erythrocyte velocity in microvessels measured with a microprismatic grating].

Using an instrument designed by the Ernst Leitz Wetzlar Company (FRG) red blood cell velocity was evaluated in model and intravital experiments. The instrument provides for an accurate quantitative determination of blood microflow velocity, enables the measurements within a wide range of velocities and diameters of microvessels. It is more unsophisticated as regards the design and operation than other instruments intended for similar purposes.