So as the blood flows, that hydrostatic pressure pushes on our capillary. That expands the holes and allows the movement of things across our wall of the capillary. So the first way is via the federations. The second way is via the space between the cells the intercellular collects. Now, another method by which things actually are transported is via the cell membrane of these endothelial cells. So notice we have the nucleus showed in purple.