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Tight junctions

Tight junctions

the tight junctions is a belt shaped and expands around the apex of columnar epithelial cells. at low magnification of the electron microscope the tight junction appear to be fused but in higher magnification electron micrographs revails that the membrane are in contact only in the point of tight junctions, function the tight junctions not only maintain the firm between two adjacent cells but also helps as barrier for the moment of certains molecules from adjacent cells.( bidur marasini sichuan university)


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How do T4 cells enter the brain?

... functions by the central nervous system. By virtue of its lack of tight junctions between epithelial cells in this density vascularized structure and the presence ...

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by anastasianikifor
Thu Aug 26, 2010 11:35 am
 
Forum: Cell Biology
Topic: How do T4 cells enter the brain?
Replies: 2
Views: 3461

Re: 5 questions about cell biology

1.Which cell junctions doesn't have cytoskeleton filament? A.Gap junction B.Tight junction I think this is gap junction but the answer said it is tight junction 2.Destruction of stress ...

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by ATPenergy
Sat Feb 20, 2010 2:14 am
 
Forum: Cell Biology
Topic: 5 questions about cell biology
Replies: 6
Views: 5242

5 questions about cell biology

1.Which cell junctions doesn't have cytoskeleton filament? A.Gap junction B.Tight junction 2.Destruction of stress fiber is most adversly effect? A.Cell division B.Cell contraction C.Sperm ...

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by ATPenergy
Fri Feb 19, 2010 4:19 am
 
Forum: Cell Biology
Topic: 5 questions about cell biology
Replies: 6
Views: 5242

Re: blood brain barrier

... tissues in various ways: 1. Brain endothelial cells are joined by tight junctions of high electrical resistance providing an effective barrier against molecules. 2. ...

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by lipoflorida
Fri Jun 19, 2009 10:05 am
 
Forum: Physiology
Topic: blood brain barrier
Replies: 2
Views: 10957

capillaries

the cell layer is just one cell thick and the gap junctions are not so tight so fluid can pass. Some cappilaries contain so called fenestrae. These are cappilaries that ...

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by sdekivit
Fri Jul 21, 2006 8:08 pm
 
Forum: Human Biology
Topic: capillaries
Replies: 2
Views: 1128
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