
Pancreas
Because the islets of Langerhans are endocrine cell clusters, they are supplied by fenestrated capillaries. A fenestrated capillary lies adjacent to an endocrine secretory cell. 10,000x

Secretory cell
Because the islets of Langerhans are endocrine cell clusters, they are supplied by fenestrated capillaries. A fenestrated capillary lies adjacent to an endocrine secretory cell. 10,000x

- Secretory granules
Because the islets of Langerhans are endocrine cell clusters, they are supplied by fenestrated capillaries. A fenestrated capillary lies adjacent to an endocrine secretory cell. 10,000x

- Mitochondria
Because the islets of Langerhans are endocrine cell clusters, they are supplied by fenestrated capillaries. A fenestrated capillary lies adjacent to an endocrine secretory cell. 10,000x

- Basal lamina of endocrine cell
Because the islets of Langerhans are endocrine cell clusters, they are supplied by fenestrated capillaries. A fenestrated capillary lies adjacent to an endocrine secretory cell. 10,000x

Capillary lumen
Because the islets of Langerhans are endocrine cell clusters, they are supplied by fenestrated capillaries. A fenestrated capillary lies adjacent to an endocrine secretory cell. 10,000x

- Fenestrations
Because the islets of Langerhans are endocrine cell clusters, they are supplied by fenestrated capillaries. A fenestrated capillary lies adjacent to an endocrine secretory cell. 10,000x

- Endothelial cell
Because the islets of Langerhans are endocrine cell clusters, they are supplied by fenestrated capillaries. A fenestrated capillary lies adjacent to an endocrine secretory cell. 10,000x

- Basal lamina of endothelial cell
Because the islets of Langerhans are endocrine cell clusters, they are supplied by fenestrated capillaries. A fenestrated capillary lies adjacent to an endocrine secretory cell. 10,000x

- Pericyte process
Because the islets of Langerhans are endocrine cell clusters, they are supplied by fenestrated capillaries. A fenestrated capillary lies adjacent to an endocrine secretory cell. 10,000x