What are the cellular constituents of blood brain barrier (BBB)?
Capillary endothelial cells
linked by tight junctions and expressing ion channels, carrier-mediated and lipid-soluble transporters, efflux pumps
Pericapillary astrocytes
end-feet adjacent to capillaries
A similar system exists for the choroidal epithelium at the blood
cerebrospinal fluid barrier (BCSFB)
