Figure 4From: Inflammatory changes in the airways of mice caused by cigarette smoke exposure are only partially reversed after smoking cessationLung inflammation is still present in lung tissue after smoking cessation. Representative photomicrographs of hematoxylin and eosin stained lung tissue of air-exposed mice (A), smoke-exposed mice (B), smoke-exposed mice 8 weeks after smoking cessation (C). Magnification, ×100. The histological sections were scored for the presence of peribronchial and perivascular inflammation (D). Total lung inflammation was defined as the average of the peribronchial and perivascular inflammation scores. n = 4-5 animals per group. Values are expressed as mean +/- S.E.M. ***P ≤ 0.001; significantly different from the control group.Back to article page