blood-brain barrier

noun
\ ˈbləd-ˈbrān- How to pronounce blood-brain barrier (audio) \

Definition of blood-brain barrier

: a naturally occurring barrier created by the modification of brain capillaries (as by reduction in fenestration and formation of tight cell-to-cell contacts) that prevents many substances from leaving the blood and crossing the capillary walls into the brain tissues

Examples of blood-brain barrier in a Sentence

Recent Examples on the Web Pfizer said science does not support using Enbrel to prevent Alzheimer’s, particularly because the molecule is too large to cross the blood-brain barrier. Washington Post, The Denver Post, "Colorado Alzheimer’s researchers shift focus after failures; begin testing leukemia medicine as treatment," 6 July 2019 Pfizer said science does not support using Enbrel to prevent Alzheimer’s, particularly because the molecule is too large to cross the blood-brain barrier. Washington Post, The Denver Post, "Colorado Alzheimer’s researchers shift focus after failures; begin testing leukemia medicine as treatment," 6 July 2019 Remember too that alcohol is a substance that crosses the blood-brain barrier; no one is injecting Instagram and freebasing Facebook. Wired, "The Danger of Thinking We’re All ‘Addicted’ to Tech," 13 Sep. 2019 Pfizer said science does not support using Enbrel to prevent Alzheimer’s, particularly because the molecule is too large to cross the blood-brain barrier. Washington Post, The Denver Post, "Colorado Alzheimer’s researchers shift focus after failures; begin testing leukemia medicine as treatment," 6 July 2019 Pfizer said science does not support using Enbrel to prevent Alzheimer’s, particularly because the molecule is too large to cross the blood-brain barrier. Washington Post, The Denver Post, "Colorado Alzheimer’s researchers shift focus after failures; begin testing leukemia medicine as treatment," 6 July 2019 Pfizer said science does not support using Enbrel to prevent Alzheimer’s, particularly because the molecule is too large to cross the blood-brain barrier. Washington Post, The Denver Post, "Colorado Alzheimer’s researchers shift focus after failures; begin testing leukemia medicine as treatment," 6 July 2019 Pfizer said science does not support using Enbrel to prevent Alzheimer’s, particularly because the molecule is too large to cross the blood-brain barrier. Washington Post, The Denver Post, "Colorado Alzheimer’s researchers shift focus after failures; begin testing leukemia medicine as treatment," 6 July 2019 Pfizer said science does not support using Enbrel to prevent Alzheimer’s, particularly because the molecule is too large to cross the blood-brain barrier. Washington Post, The Denver Post, "Colorado Alzheimer’s researchers shift focus after failures; begin testing leukemia medicine as treatment," 6 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'blood-brain barrier.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of blood-brain barrier

1934, in the meaning defined above

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Statistics for blood-brain barrier

Last Updated

1 Nov 2019

Time Traveler for blood-brain barrier

The first known use of blood-brain barrier was in 1934

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More Definitions for blood-brain barrier

blood-brain barrier

noun

Medical Definition of blood-brain barrier

: a naturally occurring barrier created by the modification of brain capillaries (as by reduction in fenestration and formation of tight cell-to-cell contacts) that prevents many substances from leaving the blood and crossing the capillary walls into the brain tissues abbreviation BBB

More from Merriam-Webster on blood-brain barrier

Rhyming Dictionary: Words that rhyme with blood-brain barrier

Britannica.com: Encyclopedia article about blood-brain barrier

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