EPCR (the Endothelial Protein C Receptor), also known as CD201, is a transmembrane glyoprotein expressed on vascular endothelial cells. EPCR inhibits thrombosis through its interactions with Protein C, activated Protein C (APC), and Coagulation Factors VII, and VIIa. It enhances the activation of Protein C in response to complexes of Thrombin-Thrombomodulin. A soluble form of EPCR inhibits the anti-coagulant activity of APC. EPCR binds to CD11b/CD18 (Mac-1) on monocytes and mediates monocyte adhesion to the vascular endothelium. In addition, it binds to the antigen receptor on gamma/delta T cells, promotes hematopoietic stem cell retention in the bone marrow, and contributes to malaria pathogenicity through binding surface proteins on Plasmodium.