It's simply a glycoprotein that exists on the membrane of the of the endothelium. Now, once this is exposed inside the blood plasma, we have this Zionogen we call factor seven. And once this is exposed, factor seven is basically activated via proteolytic cleavage. And once we activate factor seven, it goes on. It interacts and binds to the tissue factor to form a dimer complex. And then the dimer complex, it interacts with a very important factor, factor X, factor X, to basically proteolytically cleave it and activate it into its active form.