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Interalveolar septum

This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x

Alveolar lumens <p>This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x</p>

Alveolar lumens

This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x

Interalveolar septum <p>This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x</p>

Interalveolar septum

This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x

- Capillaries <p>This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x</p>

- Capillaries

This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x

- Connective tissue core <p>This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x</p>

- Connective tissue core

This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x

- Fibroblast <p>This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x</p>

- Fibroblast

This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x

- Type I cells <p>This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x</p>

- Type I cells

This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x

- Endothelial cell nuclei <p>This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x</p>

- Endothelial cell nuclei

This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x

- Blood cells <p>This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x</p>

- Blood cells

This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x

- Air-blood barrier <p>This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x</p>

- Air-blood barrier

This electron micrograph shows many of the components of the interalveolar septum illustrated in the previous illustration. Particularly thin type I cells line the entire alveolus and the bulging of capillaries into the air space is prominent. Surfactant is not preserved during fixation of lung tissue, and no septal cells nor macrophages are present in this image. 4000x

Main Slide Alveolar lumens Interalveolar septum - Capillaries - Connective tissue core - Fibroblast - Type I cells - Endothelial cell nuclei - Blood cells - Air-blood barrier