title: The endocrine cells of the chicken proventriculus.
abstract: The endocrine cells of the chicken proventriculus were investigated by selective staining techniques, immunohistochemistry and electron microscopy. The following endocrine cell types were identified: 1) Argyrophilic ECL-cells, of unknown function, were very numerous in the 21-day-old chick, but less numerous in the newborn chick; 2) somatostatin-producing D-cells; 3) GLI-cells producing glucagon-related peptides; 4) X-cells of unknown function; 5) BN-cells producing bombesin; and 6) relatively few 5-hydroxytryptamine-producing EC-cells. Each of these cell types show a distinct morphology, distribution and histochemical reactivity. With the exception of BN-cells, they resemble rather closely the corresponding endocrine cell types previously described in the oxyntic mucosa (EGL, D, X and EC cells) or in the intestinal mucosa (L-cells) of the mammalian gut.
mesh_terms: D000818:Animals; D001839:Bombesin / Q000378:metabolism; D002645:Chickens / Q000033:anatomy & histology; D004759:Enterochromaffin Cells / Q000166:cytology; D005768:Gastrointestinal Hormones / Q000378:metabolism*; D005934:Glucagon / Q000378:metabolism; D006651:Histocytochemistry; D011531:Proventriculus / Q000166:cytology* / Q000502:physiology / Q000648:ultrastructure; D012701:Serotonin / Q000378:metabolism; D013004:Somatostatin / Q000378:metabolism
chemical_list: D005768:Gastrointestinal Hormones; D012701:Serotonin; D013004:Somatostatin; D005934:Glucagon; D001839:Bombesin