Abstract
Microcirculation in the mesentery of rats with DCA induced hypertension was observed in vivo by high-speed cinematography. Tortuosities and lumina narrowings of the arterioles, venules and capillaries were observed. Red blood cells flowing in the capillaries smaller than 4.3 μ in internal diameter took a crushed, elongated cylindrical shape and the ratio of length/diameter was 2.6-4.6. Deformation of red blood cells when passed through narrow capillaries was thought to be an important causative element of hemolytic anemia.
