PROTHROMBOTIC PROPERTIES Simulation of platelet aggregation (adhesion): von Willebrand factor, platelet-activating factor. Procoagulation factors: Tissue factor, binding factors IXa and Xa, Factor V. Inhibition of fibrinolysis: t-PA inhibitorPROTHROMBOTIC PROPERTIES • Simulation of platelet aggregation (adhesion): von Willebrand factor, platelet-activating factor. • Procoagulation factors: Tissue factor, binding factors IXa and Xa, Factor V. • Inhibition of fibrinolysis: t-PA inhibitor