title: [Ultrastructure of duodenal endocrine cells in children].
abstract: All ultrastructural varieties of endocrine cells, described in literature for adult persons, were revealed in the epithelium of the duodenal crypts of children at the age of 6--14 years. The cells form rather distinct groups in accordance with the International Classification, that speaks in favour of adequate application of the methods for processing the material and allows to compare the data obtained with those in literature. Endocrine cells in children, however, demonstrate greater polymorphism as their secretory granules differ in density even within a single cell. This phenomenon, along with detecting degenerative forms, demonstrates active functioning of this cell system in children.
mesh_terms: D000293:Adolescent; D002648:Child; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D004386:Duodenum / Q000166:cytology* / Q000378:metabolism; D004702:Endocrine Glands / Q000166:cytology*; D005755:Gastrins / Q000378:metabolism; D006651:Histocytochemistry; D006801:Humans; D007413:Intestinal Mucosa / Q000166:cytology*; D008854:Microscopy, Electron; D012633:Secretin / Q000378:metabolism
chemical_list: D005755:Gastrins; D012633:Secretin
vernacular_title: Ul'trastruktura éndokrinnykh kletok dvenadtsatiperstnoĭ kishki u deteĭ.