islet-exocrine portal system

例句：

1. 1. The islet-exocrine portal system plays a crucial role in the regulation of blood sugar levels.
   岛屿内分泌门系统在调节血糖水平中起着至关重要的作用。
2. 2. The islet-exocrine portal system has been studied extensively in recent years due to its potential applications in drug delivery.
   由于其在药物递送方面的潜力，近年来对岛屿内分泌门系统进行了深入研究。
3. 3. The islet-exocrine portal system is responsible for the secretion of hormones by the endocrine pancreas.
   岛屿内分泌门系统负责由内分泌胰腺分泌激素。