arachnoid barrier cell layer
Definition: the part of the arachnoid mater located immediately internal to the dura mater (dural border cell layer); characterized by flattened ovoid cells with prominent nuclei, absence of extracellular spaces and collage, and numerous tight (occluding) junctions.
Synonym(s): barrier cell layer of arachnoid mater
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Examples: glitazone, GI cocktail, etc.