Type II (septal) cell
By electron microscopy, the details of the interalveolar septum are more evident, particularly the cytology of a type II (septal) cell. Septal cells secrete surfactant, a mixture of phospholipids and protein. The secretory granules (vesicles) are often referred to as lamellar bodies, due to their lipid content. One granule in the process of exocytosis is visible. 4000x
Alveolar lumens
By electron microscopy, the details of the interalveolar septum are more evident, particularly the cytology of a type II (septal) cell. Septal cells secrete surfactant, a mixture of phospholipids and protein. The secretory granules (vesicles) are often referred to as lamellar bodies, due to their lipid content. One granule in the process of exocytosis is visible. 4000x
Interalveolar septum
By electron microscopy, the details of the interalveolar septum are more evident, particularly the cytology of a type II (septal) cell. Septal cells secrete surfactant, a mixture of phospholipids and protein. The secretory granules (vesicles) are often referred to as lamellar bodies, due to their lipid content. One granule in the process of exocytosis is visible. 4000x
- Type II cell
By electron microscopy, the details of the interalveolar septum are more evident, particularly the cytology of a type II (septal) cell. Septal cells secrete surfactant, a mixture of phospholipids and protein. The secretory granules (vesicles) are often referred to as lamellar bodies, due to their lipid content. One granule in the process of exocytosis is visible. 4000x
-- Secretory granules
By electron microscopy, the details of the interalveolar septum are more evident, particularly the cytology of a type II (septal) cell. Septal cells secrete surfactant, a mixture of phospholipids and protein. The secretory granules (vesicles) are often referred to as lamellar bodies, due to their lipid content. One granule in the process of exocytosis is visible. 4000x
- Capillaries
By electron microscopy, the details of the interalveolar septum are more evident, particularly the cytology of a type II (septal) cell. Septal cells secrete surfactant, a mixture of phospholipids and protein. The secretory granules (vesicles) are often referred to as lamellar bodies, due to their lipid content. One granule in the process of exocytosis is visible. 4000x
-- Endothelial cell nuclei
By electron microscopy, the details of the interalveolar septum are more evident, particularly the cytology of a type II (septal) cell. Septal cells secrete surfactant, a mixture of phospholipids and protein. The secretory granules (vesicles) are often referred to as lamellar bodies, due to their lipid content. One granule in the process of exocytosis is visible. 4000x
- Fibroblasts
By electron microscopy, the details of the interalveolar septum are more evident, particularly the cytology of a type II (septal) cell. Septal cells secrete surfactant, a mixture of phospholipids and protein. The secretory granules (vesicles) are often referred to as lamellar bodies, due to their lipid content. One granule in the process of exocytosis is visible. 4000x
Air-blood barrier
By electron microscopy, the details of the interalveolar septum are more evident, particularly the cytology of a type II (septal) cell. Septal cells secrete surfactant, a mixture of phospholipids and protein. The secretory granules (vesicles) are often referred to as lamellar bodies, due to their lipid content. One granule in the process of exocytosis is visible. 4000x
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