8.5 POJA-L420. Alveolar sac in the lung

​8.5  POJA-L420                                                      

​Title: Alveolar sac in the lung 
 
Description:
Stain Azan, human. Characteristic alveolar tips (arrows) of neighbouring thin-walled alveoli (1). The tips contain elastin masked by collagen (blue-stained). At (2) small pulmonary arteries.
 

8.5 POJA-L419. Alveolar septum in the lung

​8.5  POJA-L419

Title: Alveolar septum in the lung 
 
Description:
Stain Azan, human. Two neighbouring alveoli separated by a septum. 
(1) points to the tip containing bluish-pink elastin and collagen.
​The nucleus of a squamous alveolar cell (type I  pneumocyte) is indicated by (2), and a free alveolar macrophage by (3).
 
Keywords/Mesh: respiratory tract, lung, alveolus, alveolar tip, alveolar cell, pneumocyte I, alveolar macrophage, elastin, collagen, histology, POJA collection

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