抄録
Platelet aggregates induced by 3 μM ADP or 1 μg/ml of adrenaline on a screen, which was used in a screen filtration pressure method (SFP, Swank 1961), were observed by a scanning electron microscope. SFP method measured the resistence to flow of a fluid in mmHg as the blood is forced through the screen with multiple micropores (20 μ×20 μ). In 10 samples collected from four healthy volunteers and six patients suffering from Takayasu's disease, cerebral thrombosis, atherosclerosis obliterance, pancreatitis, typical figures of platelet aggregation were observed. There were little red and white blood corpuscles and fibrin nets. A close relationship was observed between the platelet aggregability measured by SFP and the morphological changes in platelet aggregates on the screen. The results suggest that the SFP value was mainly determined with the platelet aggregability.
