Within the multicellular organism tissues, a cell junction
occurs. Animals have four kinds of intercellular junctions which
are gap junction, desmosomes, adherens junction and tight
junction,
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A gap junction is a '' tunnel '' between cells in which messages
and nutrients can be passed back and forth. A tight junction is the
connection between two cells that is strongly '' sown '' with
protein threads to help maintain tissue conformation.
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tight junction
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Junctions among epithelial cells lining the digestive tract.