Previous work indicated that venular pericytes facilitate the initial extravasation of immune cells from the blood.
From the nature.com
These results suggest a key molecular target located on the blood-brain barrier endothelium that mediates the extravasation of inflammatory cells into the CNS.
From the nature.com
The cellular component involves leukocytes, which normally reside in blood and must move into the inflamed tissue via extravasation to aid in inflammation.