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  • Title: An unusual architecture of occluding junctions between surface cells in teleost ovarian follicles (Plecoglossus altivelis).
    Author: Toshimori K, Oura C.
    Journal: Arch Histol Jpn; 1979 Dec; 42(5):543-50. PubMed ID: 539894.
    Abstract:
    An unusual architecture of occluding junctions between surface cells in teleost ovarian follicles was observed by electron microscopy, by using the freeze-fracture technique. On the P-face, double strands of intramembraneous particles are observed. A narrow furrow-like gap is recognized between two rows of particles in such double strands. On the E-face, two types of grooves can be distinguished. Type I groove consists of a wide furrow. Type II groove, which appears to be sequent to type I groove, consists of a pair of "sub-grooves" running parallel. Further, a row of particles appears to be located in the bottom of type I groove or between two "sub-grooves" of type II groove. These observations suggest that the double strands on the P-face are registered with the grooves (type I or type II) on the complementary E-face and that a row of particles on the E-face is registered with a furrow-like region between two rows in the double strands on the P-face. In other words, a single unit of the juncture of the present occluding junction is thought to consist of triplicated junctional strands.
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