title: Nature of immunoreactive gastrin extracted from tissues of gastrointestinal tract.
mesh_terms: D004381:Duodenal Ulcer / Q000276:immunology; D004386:Duodenum / Q000276:immunology; D004586:Electrophoresis; D005753:Gastric Mucosa / Q000276:immunology*; D005755:Gastrins / Q000032:analysis*; D005782:Gels; D006801:Humans; D007120:Immunochemistry; D007413:Intestinal Mucosa / Q000276:immunology*; D007456:Iodine Isotopes; D007583:Jejunum / Q000276:immunology; D008722:Methods; D011863:Radioimmunoassay; D013213:Starch; D013274:Stomach Neoplasms / Q000276:immunology; D014020:Tissue Extracts; D015043:Zollinger-Ellison Syndrome / Q000276:immunology
chemical_list: D005755:Gastrins; D005782:Gels; D007456:Iodine Isotopes; D014020:Tissue Extracts; D013213:Starch