The arrow points to the spot desmosome structure. The anchoring junctions known as maculae adhaerentes on the spot desmosomes are connected to intermediate filaments.
Spot desmosomes are seen in great concentrations in between spine-like process connections of said epithelial cells and beneath belt desmosomes throughout junctional complexes in stratified squamous epithelia.
Desmosomes are important intercellular sticky junctions seen in other tissues and in the basolateral membranes of vascular endothelium. They facilitate direct cell-cell interactions and offer intermediate filament anchoring sites that are crucial for the preservation of tissue architecture.
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