And what it does is it cleaves at four different locations. So what are these four locations? So right here, right here, right here and right here and this is shown in the following diagram. So essentially the active Thrombon goes on and cleaves at these four locations. And what that does is it completely removes these two B chains and these two A chains and these four individual chains once they are removed we call them fibrinopeptides. And so we remove these four fibrino peptides and what we form is, is a single active fibrom monomer.