title: [The blood-brain barrier. I. Morphologic data].
abstract: The blood-brain barrier (BBB) is situated between the blood and brain extracellular space (ECS), at the endothelial cells of the cerebral capillaries joined by tight junctions. Its characteristics allow a great selectivity in the blood-brain exchange of solutes: nearly total exclusion of some of them, enhancement of exchange for others. The choroid plexuses, situated at the blood-cerebrospinal fluid interface, play a similar role between blood and CSF. Neither interface can be studied separately.
mesh_terms: D000818:Animals; D001158:Arteries / Q000648:ultrastructure; D001812:Blood-Brain Barrier; D001921:Brain / Q000098:blood supply* / Q000648:ultrastructure; D002196:Capillaries / Q000648:ultrastructure; D004727:Endothelium / Q000648:ultrastructure; D005110:Extracellular Space; D006801:Humans; D007365:Intercellular Junctions / Q000648:ultrastructure
vernacular_title: La barrière hémato-encéphalique. I. Données morphologiques.