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    Image of foreign body in the lung from a male Harlan Sprague-Dawley rat in a chronic study
    Lung, Bronchus - Foreign body in a male Harlan Sprague-Dawley rat from a chronic study. Multiple foreign bodies are present in a bronchus.
    Image of foreign body in the lung from a male Harlan Sprague-Dawley rat in a chronic study
    Lung, Bronchiole - Foreign body in a male Harlan Sprague-Dawley rat from a chronic study (higher magnification of Figure 1). The plant material (bedding or feed) has incited a suppurative inflammatory response.
    Image of foreign body in the lung from a male Harlan Sprague-Dawley rat in a chronic study
    Lung, Alveolus - Foreign body in a male Harlan Sprague-Dawley rat from a chronic study. A foreign body with associated suppurative inflammation is present in an alveolus.
    Image of foreign body in the lung from a male Wistar Han rat in a chronic study
    Lung, Alveolus - Foreign body in a female Wistar Han rat from a chronic study. A foreign body is present in an alveolus, with associated granulomatous inflammation.
    Image of foreign body in the lung from a male Wistar Han rat in a chronic study
    Lung, Bronchiole - Foreign body in a male Wistar Han rat from a chronic study. A hair fragment (arrow) is present in a bronchiole.
    Image of foreign body in the lung from a male Wistar Han rat in a chronic study
    Lung, Bronchiole - Foreign body in a male Wistar Han rat from a chronic study (higher magnification of Figure 5). The hair fragment (arrow) has incited an inflammatory reaction and an ulcer in the adjacent epithelium.
    Image of foreign body in the lung from a female F344/N rat in a chronic study
    Lung, Bronchiole - Foreign body in a female F344/N rat from a chronic study. Inflammation and epithelial hyperplasia associated with a hair shaft is present in a bronchiole.
    Image of foreign body in the lung from a female F344/N rat in a chronic study
    Lung, Alveolus - Foreign body in a female F344/N rat from a chronic study. Corn oil from a gavage accident is present in the alveoli, with acute inflammation and hemorrhage.