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Desmosomes
- series of fused integral protein molecules in plasma membranes of adjacent cells
- form an impermeable junction to prevent molecules from passing the extracellular space
Gap Junctions
Tight Junctions
- consists of plaque which acts as the base of linker proteins and intermediate filaments to distribute tension throughout the cell
- anchor cells to each other to prevent separation
- use connexons, which are hollow cylinders made of transmembrane proteins, to form channels between cells
- allow substances to pass between adjacent cells
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