title: The search for submammalian gastrins: the identification of amphibian gastrin.
mesh_terms: D000663:Amphibians / Q000502:physiology*; D000818:Animals; D004064:Digestive System / Q000032:analysis*; D004386:Duodenum / Q000032:analysis; D005755:Gastrins / Q000032:analysis* / Q000097:blood / Q000276:immunology; D008970:Molecular Weight; D010179:Pancreas / Q000032:analysis; D011706:Pyloric Antrum / Q000032:analysis; D011863:Radioimmunoassay; D011892:Rana catesbeiana; D011894:Rana pipiens
chemical_list: D005755:Gastrins