The central nervous system consists of neurons and glial cells. Neurons constitue about half the volume of the CNS and glial cells make up the rest. Glial cells provide support and protection for neurons. They are thus known as the "supporting cells" of the nervous system.
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The brain is made up of more than just nerve cells (neurons). Although there are about 100 billion neurons in the brain, there may be about 10 to 50 times that many glial cells in the brain. (New research suggests the neuron-to-glia ratio may be smaller.) But do you hear much about glia?
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faculty.washington.edu/chudler/glia.html
faculty.washington.edu/chudler/glia.html
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Nearly 90 percent of the brain is composed of glial cells, not neurons. Andrew Koob argues that these overlooked cells just might be the source of the imagination ... He's also the author of The Root of Thought, which explores the purpose and function of glial cells, the most abundant cell type in the brain.
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www.scientificamerican.com/article.cfm?id=the-root-of-t...
www.scientificamerican.com/article.cfm?id=the-root-of-thought-what
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Radial glial cells (RGCs), a transient cell population present only in the developing CNS, function both as precursor cells and as scaffolds to support neuron migration. ... Embryonic forebrain neural stem cells were studied in vitro to identify putative signals that promote the generation and differentiation of functional RGCs,
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www.medscape.com/medline/abstract/14684861
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Thus, c-fos activation by LPS in glial cells occurs via the SRE or CRE in an independent manner, and involves the Elk1 or CREB/ATF-1 transcription factors. Elk1-mediated transactivation was dependent on p38 MAPK, suggesting a crucial role of these factors in mediating inflammatory responses in the CNS.
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www.medscape.com/medline/abstract/15686494
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Glial cells are maintenance and support cells in the central nervous system (CNS). They are 10 times as numerous as the nerve cells (neurons) which they look after and make up about half the wieght of the brain.
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www.mult-sclerosis.org/glialcells.html
www.mult-sclerosis.org/glialcells.html
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Glial cells, which help neurons communicate with each other, can leave the central nervous system and cross into the peripheral nervous system to compensate for missing cells, according to new research. ... 1, 2009) — Glial cells, which help neurons communicate with each other, can leave the central nervous system and...
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www.sciencedaily.com/releases/2009/12/091201182616.htm
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