Activation of human protein C by blood coagulation factor Xa in the presence of anionic phospholipids: enhancement by sulphated polysaccharides - Freyssinet, J M; Wiesel, M L; Grunebaum, L; Pereillo, J M; Gauchy, J; Schuhler, S; Freund, G; Cazenave, J P (Biochem J, 1989)