Definition of Blood-brain barrier

1. Noun. A mechanism that creates a barrier between brain tissues and circulating blood; serves to protect the central nervous system. "The brain was protected from the large molecules of the virus by the blood-brain barrier"

Generic synonyms: Barrier

Medical Definition of Blood-brain barrier

1. A protective barrier formed by the blood vessels and glia of the brain. It prevents some substances in the blood from entering brain tissue. The blood vessels of the brain (and the retina) are much more impermeable to large molecules (like antibodies) than blood vessels elsewhere in the body. This has important implications for the ability of the organism to mount an immune response in these tissues, although the basis for the difference in endothelial permeability is not well understood. (16 Dec 1997)

Lexicographical Neighbors of Blood-brain Barrier

blondined
blondines
blondining
blondish
blondness
blondnesses
blonds
blood
blood
blood-air barrier
blood-and-guts
blood-aqueous barrier
blood-boltered
blood-borne pathogens
blood-brain barrier (current term)
blood-brain barrier (current term)
blood-cerebrospinal fluid barrier
blood-filled
blood-red
blood-related
blood-retinal barrier
blood-shotten
blood-testis barrier
blood-thinner
blood-twig
blood-vascular system
bloodbath
bloodbaths
bloodberry
bloodbird

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