胰脏的小叶界限不清，内分泌部有丰富的毛细血管。
Pancreatic lobule, whose endocrine portion has many capillary vessel, is not developed.
在胰的外分泌部和内分泌部（胰岛）均可观察到生长素的表达。
Ghrelin immunopositive cells were simlarly observed in the exocrine portion and endocrine portion (pancreas islet) of pancreas.
结果发现GABA免疫反应阳性细胞主要分布于胰腺内分泌部（胰岛）。
The results demonstrated that GABA immunoreactive cells were mainly located in the pancreatic islets.
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