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What is the blood brain barrier? August 10, 2006

Posted by healthyself in Alzheimer's, Biological Dentistry, Blood Brain Barrier, Cell phone safety, Definitions, Health related, Immune system, radiation, Research.
Blood-Brain Barrier“The blood-brain barrier (BBB) is the specialized system of capillary endothelial cells that protects the brain from harmful substances in the blood stream, while supplying the brain with the required nutrients for proper function. Unlike peripheral capillaries that allow relatively free exchange of substance across / between cells, the BBB strictly limits transport into the brain through both physical (tight junctions) and metabolic (enzymes) barriers.”http://users.ahsc.arizona.edu/davis/bbb.htm    


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