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tight junction |
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tight junction [¦tīt ′jəŋk·shən] (cell and molecular biology) An intercellular junction composed of a series of fusions of the junctional membrane, forming a continuous seal; serves as a selective barrier to small molecules and as a total barrier to large molecules. Also known as impermeable junction; occluding junction; zonula occludens. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The researchers suspected that the motions induced by Map pull apart the tight junction between intestinal cells, causing diarrhea that spreads E. Zonulin is an endogenous signaling protein that transiently and reversibly opens the tight junctions ("tj") between the cells of epithelial and endothelial tissues such as the intestinal mucosa, blood brain barrier and pulmonary epithelia. The low-magnification micrographs showed no evidence of tight junctions between the apical poles of the cells or the presence of gap junctions. |
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