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  • Title: Lectin histochemical evaluation of glycoconjugates in dog efferent ductules.
    Author: Wakui S, Furusato M, Takahashi H, Motoya M, Ushigome S.
    Journal: J Anat; 1996 Jun; 188 ( Pt 3)(Pt 3):541-6. PubMed ID: 8763471.
    Abstract:
    Glycoconjugates in the epithelial cells of the efferent ductules in the dog were investigated using lectin histochemistry. These ductules connect the extratesticular rete with the epididymis. The epithelium of the ductules consisted both of ciliated and nonciliated cells. Whereas the apical zone of ciliated cells showed selective binding with WGA, SWGA, SNA, MAA and neuraminidase-PNA, that of nonciliated cells bound to all lectins used in the present study: WGA, SWGA, SNA, MAA, PNA, neuraminidase-PNA, RCA1, DBA and SBA. The nonciliated cells were divided into 3 types: type A cells which lacked both specific granules and vacuoles, type B cells which were characterised by a few specific apical vacuoles and many large specific granules, and type C cells which were characterised by some specific apical vacuoles and small basal granules. The specific granules and vacuoles of type B cells showed binding with WGA, SWGA and MAA. The specific granules of type C cells showed binding with WGA, SWGA, SNA, MAA, PNA and neuraminidase-PNA, while their specific vacuoles showed binding with WGA, SWGA, SNA and MAA. The Golgi zone both of ciliated and type A cells did not bind with any lectins used in this study, while type B and C cells showed similar lectin binding patterns between the Golgi zone and their specific granules. Specific lectin binding patterns revealed a different carbohydrate composition of each type of cell, indicating a biological difference between the ciliated cells and the 3 types of nonciliated cells in dog efferent ductules.
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