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Which of the following intercellular junctions plays a critical role in sealing adjacent epithelial cells, thereby preventing leakage of substances across tissues?
A
Tight junction
B
Gap junction
C
Adhering junction
D
All of the above
Explanation
Tight junctions help to stop substances from leaking across a tissue. Adhering junctions perform cementing to keep neighboring cells together. Gap junctions facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells.
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