title: Letter: Gastrin and islet-cell tumors.
mesh_terms: D007516:Adenoma, Islet Cell / Q000378:metabolism*; D000906:Antibodies; D005755:Gastrins / Q000032:analysis* / Q000378:metabolism; D006801:Humans; D008970:Molecular Weight; D010190:Pancreatic Neoplasms / Q000378:metabolism*
chemical_list: D000906:Antibodies; D005755:Gastrins