A cellular component that forms a specialized region of connection between two or more cells, or between a cell and the extracellular matrix, or between two membrane-bound components of a cell, such as flagella.
Cell junctions join cells in some biological tissues.
- Adherens junctions: holds cells together and provides tissues with structural support. They are common where mechanical stress occurs eg. skin or heart
- Gap junctions: allows for chemical communication between neighbouring cells
- Tight junctions: regulate movement of water and liquids between epithelial layers
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