What is the permeability barrier that joins the cell membranes of adjacent cells to form a tight seal?

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Tight junctions are the permeability barrier that joins the cell membranes of adjacent cells to form a tight seal. Hemidesmosomes anchor cells to the extracellular matrix, adhesion belts provide mechanical strength and stability to tissues, gap junctions allow communication and exchange of molecules between adjacent cells, and desmosomes provide mechanical strength and support to tissues.

What Is the Permeability Barrier That Joins the Cell Membranes