title: Some observations on the ultrastructure of a malignant islet cell tumor associated with duodenal ulceration and severe diarrhea.
mesh_terms: D007516:Adenoma, Islet Cell / Q000150:complications / Q000473:pathology*; D003967:Diarrhea / Q000209:etiology / Q000473:pathology*; D004381:Duodenal Ulcer / Q000150:complications / Q000473:pathology*; D004721:Endoplasmic Reticulum; D005755:Gastrins / Q000378:metabolism; D006801:Humans; D007008:Hypokalemia / Q000209:etiology; D008099:Liver / Q000473:pathology*; D008854:Microscopy, Electron; D009362:Neoplasm Metastasis
chemical_list: D005755:Gastrins