blood-brain barrier
noun
\ ˈbləd-ˈbrān-
\
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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 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. — Christopher Rowland, Washington Post, "Alzheimer’s research is getting a reboot at small companies focused on the immune system," 5 July 2019 With its added methyl-group molecule, Pervitin races across the blood-brain barrier a bit faster than Benzedrine. — Fox News, "Nazi soldiers used performance-enhancing 'super-drug' in World War II, shocking documentary reveals," 25 June 2019 Then again, the explanation could be more simple: Chemotherapies designed to kill certain cells are breaching the blood-brain barrier and attacking neurons directly. — Melissa Healy, Washington Post, "The story must be told.," 16 June 2018 Then again, the explanation could be more simple: Chemotherapies designed to kill certain cells are breaching the blood-brain barrier and attacking neurons directly. — Melissa Healy, Washington Post, "The story must be told.," 16 June 2018 Then again, the explanation could be more simple: Chemotherapies designed to kill certain cells are breaching the blood-brain barrier and attacking neurons directly. — Melissa Healy, Washington Post, "The story must be told.," 16 June 2018These 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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