title: Distribution and ultrastructure of gastrin cells in the duck digestive tract.
mesh_terms: D000818:Animals; D004064:Digestive System / Q000648:ultrastructure*; D004372:Ducks / Q000033:anatomy & histology*; D004947:Esophagus / Q000648:ultrastructure; D005755:Gastrins / Q000032:analysis*; D007124:Immunoenzyme Techniques
chemical_list: D005755:Gastrins