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gap junction  a narrowed portion of the intercellular space, containing channels linking adjacent cells and through which can pass ions, most sugars, amino acids, nucleotides, vitamins, hormones, and cyclic AMP. In electrically excitable tissues the gap junctions serve to transmit electrical impulses via ionic currents and are known as electrotonic synapses; they are present in such tissues as myocardial tissue.
Gap junctions providing passageways between the interiors of adjacent cells.

Gap junctions providing passageways between the interiors of adjacent cells.




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