In detail, lung specimens were sectioned at 5 [micro]m for light microscopy and H&E staining was performed to investigate the number of alveolar sacs in a blinded fashion [23, 24, 30, 35].
Hematoxylin and eosin staining revealed that 5 days after ARDS induction, numbers of alveolar sacs, an index of lung parenchyma integrity, was the lowest in untreated ARDS, increased progressively and significantly across the ARDS + SW, ARDS + Mito, and ARDS + SW + Mito groups, and was the highest in the SC group.
The normal architecture of the lungs section showed numerous clear alveoli (A) and alveolar sacs
These included alveolus models comprising a single hemisphere attached to a duct (i.e., respiratory bronchiole) [11-16], an alveolar duct with multiple alveoli (i.e., alveolated duct) [17, 18], and space-filling-based models with honeycomb or polygonal structures (i.e., terminal alveolar sacs
4D) can be found in the proximities of the alveolar sacs
of the two species of Amazonian cetaceans, a fact that resembles the study of Crespo & Lauria De Cidre (2005), who showed the presence of myoelastic sphincter distributed near the alveolar sacs
of the lungs of Pontoporia blainvillei.
H & E staining (Figures 2(A)-2(C)) demonstrated that the number of alveolar sacs
was significantly lower in group 2 than that in groups 1 and 3 and significantly lower in group 3 than in group 1 (Figure 2(D)).
Emphysema is defined in terms of anatomical changes to the distal, or peripheral, structures of the lungs, i.e., the terminal bronchioles, alveolar ducts, and alveolar sacs
. Emphysema represents a pathological diagnosis involving permanent enlargement of alveoli.
These lead into alveolar sacs
resembling bunches of grapes.
But then again, it may not; it may stick to a cell wall somewhere on the 200 [m.sup.2] or so of exposed tissue in Susan's alveolar sacs
Epidemiologically, the deposition of bacilli into alveolar sacs
is the most common route of Mtb infection following an inhalation.