Figure 5From: Inflammatory changes in the airways of mice caused by cigarette smoke exposure are only partially reversed after smoking cessationPigmented macrophage accumulation in the lung tissue before and 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). n = 4-5 animals per group. Magnification, ×400.Back to article page