title: Preparation and characterization of a biologically active gastrin derivative modified with an 125I-labeled imidoester.
mesh_terms: D000818:Animals; D001681:Biological Assay; D005750:Gastric Juice / Q000187:drug effects / Q000378:metabolism; D005755:Gastrins; D007096:Imidoesters; D007202:Indicators and Reagents; D007457:Iodine Radioisotopes; D007553:Isotope Labeling / Q000379:methods; D009337:Necturus; D011863:Radioimmunoassay; D013056:Spectrophotometry, Ultraviolet
chemical_list: D005755:Gastrins; D007096:Imidoesters; D007202:Indicators and Reagents; D007457:Iodine Radioisotopes