Abstract
The effect in vivo of high and low molecular weight colloids on red cell and platelet aggregation, has been investigated using the SFP method.
High molecular weight colloids produce blood cell aggregation and an increase in ADP induced platelet aggregation. Low molecular weight colloids are devoid of such effects.
The direct action of high molecular weight colloids, appears to be due to sensitization of the platelets, the effect being made evident by increased red cell or platelet aggregation.
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