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What (who) is junctional complex - definition
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![JET in a 2-month-old girl following cardiac surgery. In this case the [[right bundle branch block]] was present during tachycardia and during normal sinus rhythm.](https://commons.wikimedia.org/wiki/Special:FilePath/PMC6092634 Valdes 2018 JET ECG.jpg?width=200 "JET in a 2-month-old girl following cardiac surgery. In this case the [[right bundle branch block]] was present during tachycardia and during normal sinus rhythm.")
Wikipedia
Cell junctions or junctional complexes, are a class of cellular structures consisting of multiprotein complexes that provide contact or adhesion between neighboring cells or between a cell and the extracellular matrix in animals. They also maintain the paracellular barrier of epithelia and control paracellular transport. Cell junctions are especially abundant in epithelial tissues. Combined with cell adhesion molecules and extracellular matrix, cell junctions help hold animal cells together.
Cell junctions are also especially important in enabling communication between neighboring cells via specialized protein complexes called communicating (gap) junctions. Cell junctions are also important in reducing stress placed upon cells.
In plants, similar communication channels are known as plasmodesmata, and in fungi they are called septal pores.
