C1 AND HUMAN PLATELETS .2. DETECTION BY IMMUNOLOGICAL METHODS AND ROLE

  • 1 January 1976
    • journal article
    • research article
    • Vol. 30 (4), 459-465
Abstract
A C1 [the 1st complement component] hemolytic activity was previously shown to be associated with platelets. The presence of C1 on human gel filtered platelets is confirmed by Ouchterlony analysis and platelet aggregation induced by anti-C1q [q fragment of C1] antisera. After cleavage of C1 by EDTA, platelet aggregation induced by aggregated IgG [immunoglobulin G] was decreased and was restored by the addition of C1. The possible role of C1 in human platelet aggregation induced by aggregated Ig or immune complexes is discussed.