part of develops from start stage end stage pancreas endocrine pancreas TAO:0001260 tail pancreas May be called pancreatic islets of Langerhans (related synonym). Alpha cells secrete glucagon like peptide, beta-insulin, delta cells-somatostatin, pancreastatin. May also be called "Brockman bodies". zebrafish_anatomy The zebrafish endocrine pancreas is an compound organ component composed of small groups of islet cells that are distributed throughout the exocrine pancreas. The islet cells produce insulin, glucagon and somatostatin. pancreatic islet ZFA:0001260 posterior pancreatic bud compound organ component hatching:long-pec adult