So in the extrinsic pathway, we have the tissue factor. The glycoprotein found on the membrane of the endothelium of the blood vessel basically forms a dimer complex with factor seven. And once we form this complex, this complex then reacts with factor ten to basically activate it and begin the final common pathway. Now, what the tissue factor pathway? What the tissue factor pathway inhibitor does is it binds unto the tissue factor, factor seven complex, and it inhibits its activity. And it also has domains on this polypeptide that can bind onto the individual factor seven, and that factor ten, and it can inhibit both of these different molecules.