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Aggregation of human platelets induced by porcine endothelial cells is dependent upon both activation of complement and thrombin generation

Abstract: The binding of human xenoreactive antibody (XNA) to porcine endothelium with complement (C) activation via the classical pathways is considered the major event triggering hyperacute rejection (HAR) with microvascular thrombosis in vivo. As C components are linked to key events in blood coagulation, we have examined pathways whereby activation of complement by endothelial cells results in xenogeneic platelet activation in vitro.