has part has part has_part only in taxon has developmental contribution from Vertebrata <vertebrates> Homo sapiens endocrine pancreas pancreas https://upload.wikimedia.org/wikipedia/commons/7/7e/Blausen_0699_PancreasAnatomy2.png The zebrafish does not have a discrete pancreas. Exocrine pancreatic tissue can be found scattered along the intestinal tract. The acinar structure of the exocrine pancreas is very similar to that of mammals and comprises cells with a very dark, basophilic cytoplasm pancreatic viscus dorsal pancreatic bud ventral pancreatic bud