Confocal immunofluorescence of TF protein expressed by LPS-stimulated PBMC preparations. PBMC suspensions, similar to those of Figure 5, were stimulated with LPS during 5 hours. Here, a distinctive TF label is observed in the cell periphery of leukocytes (presumably monocytes). Contaminating platelets stained strongly for GPIbα and TF, which showed extensive colocalization.