Junctions

... have a structural role in the cell wall of plants (cellulose) and fungi (poly-N-acetylglucosamine), they are important for cell adhesion (in cell junctions), they are important in the immune system (a lot of antigens are actually sugar molecules) etc.

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... of the inflammation caused by bacterial toxins, destroyed neurons and endogenous substances, the endothelial cells become more permeable (the cell junctions loosen), and immune cells can enter the brain. Only lipo soluble substances can pass through the b-b barrier.

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... is like the molecular mechanism of crossing-over if you will. While crossing over is something described mostly by cytogenetisists, Holliday junctions are the topic of molecular biologists. Now, what you are missing is that there is a very elaborate enzyme machinery working in this process. ...

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... of capillaries in the brain are different to those found in peripheral tissues in various ways: 1. Brain endothelial cells are joined by tight junctions of high electrical resistance providing an effective barrier against molecules. 2. In peripheral endothelial cells there is good transcellular ...

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... Eukaryotic nucleus Intracellular transport Cellular membranous structures [PS:Most common protein(s) in muscles are actin, myosin, and desmosome junctions.]

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