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  • Title: Junctional structures in digestive epithelia of a cephalopod.
    Author: Boucaud-Camou E.
    Journal: Tissue Cell; 1980; 12(2):395-404. PubMed ID: 7414602.
    Abstract:
    Intercellular junctions have been studied in the epithelia of digestive organs of Sepia officinalis (digestive gland, digestive duct appendages and caecum) by conventional staining, lanthanum tracer and freeze-fracturing techniques. In the three organs studied the same junctional complex occurs, consisting of a belt desmosome, a septate junction and gap junctions. The septate junction isd of pleated-sheet type and the gap junction has its particles on the P face of the fracture. Circular structures have been found in the digestive gland septate junctions. Neither continuous nor tight junctions have been found. These results show that Cephalopods have junctional structures very close to those of other Molluscs and of Annelids. Some small differences between the septate junctions of the three organs could be related to their different physiology.
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