![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Overview
This electron micrograph shows endocrine cells which secrete a peptide hormone. Hormone is stored in secretory granules and released into the extracellular space via the merocrine mode of secretion. The close association of these cells with a nearby fenestrated capillary facilitates the rapid entry of the hormones into the circulation. Endocrine pancreas 12,000x
![Endocrine cells <p>This electron micrograph shows endocrine cells which secrete a peptide hormone. Hormone is stored in secretory granules and released into the extracellular space via the merocrine mode of secretion. The close association of these cells with a nearby fenestrated capillary facilitates the rapid entry of the hormones into the circulation. Endocrine pancreas 12,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/07/Or.Endo_.Ov-3-1-ping.png)
Endocrine cells
This electron micrograph shows endocrine cells which secrete a peptide hormone. Hormone is stored in secretory granules and released into the extracellular space via the merocrine mode of secretion. The close association of these cells with a nearby fenestrated capillary facilitates the rapid entry of the hormones into the circulation. Endocrine pancreas 12,000x
![- Secretory granules <p>This electron micrograph shows endocrine cells which secrete a peptide hormone. Hormone is stored in secretory granules and released into the extracellular space via the merocrine mode of secretion. The close association of these cells with a nearby fenestrated capillary facilitates the rapid entry of the hormones into the circulation. Endocrine pancreas 12,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/07/Or.Endo_.Ov-3-2-ping.png)
- Secretory granules
This electron micrograph shows endocrine cells which secrete a peptide hormone. Hormone is stored in secretory granules and released into the extracellular space via the merocrine mode of secretion. The close association of these cells with a nearby fenestrated capillary facilitates the rapid entry of the hormones into the circulation. Endocrine pancreas 12,000x
![Capillary <p>This electron micrograph shows endocrine cells which secrete a peptide hormone. Hormone is stored in secretory granules and released into the extracellular space via the merocrine mode of secretion. The close association of these cells with a nearby fenestrated capillary facilitates the rapid entry of the hormones into the circulation. Endocrine pancreas 12,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/07/Or.Endo_.Ov-3-3-ping.png)
Capillary
This electron micrograph shows endocrine cells which secrete a peptide hormone. Hormone is stored in secretory granules and released into the extracellular space via the merocrine mode of secretion. The close association of these cells with a nearby fenestrated capillary facilitates the rapid entry of the hormones into the circulation. Endocrine pancreas 12,000x
![- Endothelial cell nucleus <p>This electron micrograph shows endocrine cells which secrete a peptide hormone. Hormone is stored in secretory granules and released into the extracellular space via the merocrine mode of secretion. The close association of these cells with a nearby fenestrated capillary facilitates the rapid entry of the hormones into the circulation. Endocrine pancreas 12,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/07/Or.Endo_.Ov-3-4-ping.png)
- Endothelial cell nucleus
This electron micrograph shows endocrine cells which secrete a peptide hormone. Hormone is stored in secretory granules and released into the extracellular space via the merocrine mode of secretion. The close association of these cells with a nearby fenestrated capillary facilitates the rapid entry of the hormones into the circulation. Endocrine pancreas 12,000x
![- Fenestrated endothelium <p>This electron micrograph shows endocrine cells which secrete a peptide hormone. Hormone is stored in secretory granules and released into the extracellular space via the merocrine mode of secretion. The close association of these cells with a nearby fenestrated capillary facilitates the rapid entry of the hormones into the circulation. Endocrine pancreas 12,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/07/Or.Endo_.Ov-3-5-ping.png)
- Fenestrated endothelium
This electron micrograph shows endocrine cells which secrete a peptide hormone. Hormone is stored in secretory granules and released into the extracellular space via the merocrine mode of secretion. The close association of these cells with a nearby fenestrated capillary facilitates the rapid entry of the hormones into the circulation. Endocrine pancreas 12,000x