Intracellular and surface distribution of TF-YFP–mediated activity in monocytes and granulocytes. Overexpression of TF-YFP leads to increase in surface (A) and total (B) TF activity in monocytes regardless of LPS stimulation. Reintroduction of TF-YFP–expressing monocytes increases surface (C) and total (D) TF activity in granulocytes. *P < .05 compared with nonstimulated controls transfected with empty vector. Error bars represent SEM.