Table 3.

Indexes of alveolar and pulmonary vascular muscularization in room air- and cigarette smoke-exposed animals

%Vessels	Room Air	Cigarette Smoke
Pulmonary muscularization
None	41.6 ± 14.9	45.0 ± 6.7
Partial	36.4 ± 9.4	38.1 ± 3.5
Complete	22.1 ± 6.1	17.0 ± 4.6
Alveolar space
MLI	28.9 ± 0.82	32.9 ± 1.18*

Values are means ± SE; n = 4–6 for mean linear intercept (MLI), and n = 3 to 4 for histological analysis.

^*P < 0.05.