Figure 8).

Protruding leukocytes on the surface of plaques from particulate air pollution (particles smaller than 10 μm in diameter)-exposed rabbits. A Leukocyte protruding through apertures in the endothelium. B (Inset from A) Small endothelial filopodia extending up the side of the protruding cell (arrow). C Another migrating leukocyte with nonpolarized lamellipodia. D (Inset from C) Paracellular migration at a bicellular junction (black arrows) with three filopodia of endothelial cell (EC) 1 extending up the leukocyte (white arrows)