![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Macrophage and Mast cell
This electron micrograph shows two macrophages with indented nuclei and ruffled plasma membranes. The mast cell seen here contains numerous electron-dense, secretory granules throughout its cytoplasm. Its spherical, central nucleus shows moderate, peripheral heterochromatin. 7000x
![Macrophages <p>This electron micrograph shows two macrophages with indented nuclei and ruffled plasma membranes. The mast cell seen here contains numerous electron-dense, secretory granules throughout its cytoplasm. Its spherical, central nucleus shows moderate, peripheral heterochromatin. 7000x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/T.CT_.CTP_.Cells-17-2-ping.png)
Macrophages
This electron micrograph shows two macrophages with indented nuclei and ruffled plasma membranes. The mast cell seen here contains numerous electron-dense, secretory granules throughout its cytoplasm. Its spherical, central nucleus shows moderate, peripheral heterochromatin. 7000x
![Mast cell <p>This electron micrograph shows two macrophages with indented nuclei and ruffled plasma membranes. The mast cell seen here contains numerous electron-dense, secretory granules throughout its cytoplasm. Its spherical, central nucleus shows moderate, peripheral heterochromatin. 7000x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/T.CT_.CTP_.Cells-17-1-ping.png)
Mast cell
This electron micrograph shows two macrophages with indented nuclei and ruffled plasma membranes. The mast cell seen here contains numerous electron-dense, secretory granules throughout its cytoplasm. Its spherical, central nucleus shows moderate, peripheral heterochromatin. 7000x
![- Mast cell granules <p>This electron micrograph shows two macrophages with indented nuclei and ruffled plasma membranes. The mast cell seen here contains numerous electron-dense, secretory granules throughout its cytoplasm. Its spherical, central nucleus shows moderate, peripheral heterochromatin. 7000x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/T.CT_.CTP_.Cells-17-3-ping.png)
- Mast cell granules
This electron micrograph shows two macrophages with indented nuclei and ruffled plasma membranes. The mast cell seen here contains numerous electron-dense, secretory granules throughout its cytoplasm. Its spherical, central nucleus shows moderate, peripheral heterochromatin. 7000x
![Collagen fibrils <p>This electron micrograph shows two macrophages with indented nuclei and ruffled plasma membranes. The mast cell seen here contains numerous electron-dense, secretory granules throughout its cytoplasm. Its spherical, central nucleus shows moderate, peripheral heterochromatin. 7000x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/T.CT_.CTP_.Cells-17-4-ping.png)
Collagen fibrils
This electron micrograph shows two macrophages with indented nuclei and ruffled plasma membranes. The mast cell seen here contains numerous electron-dense, secretory granules throughout its cytoplasm. Its spherical, central nucleus shows moderate, peripheral heterochromatin. 7000x
![Ground substance <p>This electron micrograph shows two macrophages with indented nuclei and ruffled plasma membranes. The mast cell seen here contains numerous electron-dense, secretory granules throughout its cytoplasm. Its spherical, central nucleus shows moderate, peripheral heterochromatin. 7000x</p>](https://digitalhistology.org/wp-content/uploads/2018/06/T.CT_.CTP_.Cells-17-5-ping.png)
Ground substance
This electron micrograph shows two macrophages with indented nuclei and ruffled plasma membranes. The mast cell seen here contains numerous electron-dense, secretory granules throughout its cytoplasm. Its spherical, central nucleus shows moderate, peripheral heterochromatin. 7000x