title: The ultrasturcture of the human pancreatic islets. I. The islets of adults.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001706:Biopsy; D002467:Cell Nucleus; D003594:Cytoplasmic Granules; D004386:Duodenum / Q000166:cytology; D005753:Gastric Mucosa / Q000166:cytology; D005755:Gastrins / Q000378:metabolism; D006801:Humans; D007413:Intestinal Mucosa / Q000166:cytology; D007515:Islets of Langerhans / Q000166:cytology* / Q000378:metabolism; D008854:Microscopy, Electron; D008875:Middle Aged; D013194:Staining and Labeling
chemical_list: D005755:Gastrins