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    Image of ulcer in the esophagus from a female F344/N rat in a chronic study
    Esophagus - Ulcer in a female F344/N rat from a chronic study. A portion of the epithelium is missing (arrow).
    Image of ulcer in the esophagus from a female F344/N rat in a chronic study
    Esophagus - Ulcer in a female F344/N rat from a chronic study (higher magnification of Figure 1). The ulcerated region (arrow) is flanked by a region with regeneration (arrowhead).
    Image of ulcer in the esophagus from a female F344/N rat in a chronic study
    Esophagus - Ulcer in a female F344/N rat from a chronic study. A portion of the epithelium is missing (arrow), and only the overlying keratin remains.
    Image of ulcer in the esophagus from a female F344/N rat in a chronic study
    Esophagus - Ulcer in a female F344/N rat from a chronic study (higher magnification of Figure 3). The denuded epithelium is replaced by necrotic debris and inflammatory cells (arrow).
    Image of ulcer in the esophagus from a female F344/N rat in a chronic study
    Esophagus - Ulcer in a female F344/N rat from a chronic study (higher magnification of Figure 4). The denuded epithelium is replaced by necrotic debris and inflammatory cells (arrow).