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  • Title: Ultrastructural localization of cholecystokinin in endocrine cells of the dog duodenum by the immunogold technique.
    Author: Usellini L, Capella C, Malesci A, Rindi G, Solcia E.
    Journal: Histochemistry; 1985; 83(4):331-6. PubMed ID: 2415496.
    Abstract:
    Cholecystokinin (CCK) has been localized by the immunogold technique in a type of endocrine cell of the dog duodenum characterized by small (166 +/- 38 nm) secretory granules with fairly dense, homogeneous core separated from its enveloping membrane by a thin clear space. The CCK cell is immunocytochemically distinct and cytologically different from other types of endocrine cells, as the secretin, GIP and motilin cells, already identified in the dog duodenum.
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