1. This unit consists of lobule model and alveolus model.
2. Magnified lobule shows terminal bronchiole, respiratorybronchiole, alveolar epithelium, etc.
3. Magnified alveolus shows alveolus, alveolar epithelium, alveolar saccules, alveolar ducts and alveolar capillary.
4. Material: Advanced PVC and paint
