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    Image of inflammation in the tongue from a female F344/N rat in a chronic study
    Tongue - Inflammation, Chronic active in a male F344/N rat from a chronic study. The muscle bundles are separated by inflammatory cells and fluid.
    Image of inflammation in the tongue from a male F344/N rat in a chronic study
    Tongue - Inflammation, Chronic active in a male F344/N rat from a chronic study (higher magnification of Figure 1). Inflammatory cells comprise lymphocytes, macrophages, and neutrophils.
    Image of inflammation in the tongue from a male F344/N rat in a chronic study
    Tongue - Inflammation, Suppurative in a female F344/N rat from a chronic study. There is a large abscess in the tongue.
    Image of inflammation in the tongue from a female F344/N rat in a chronic study
    Tongue - Inflammation, Suppurative in a female F344/N rat from a chronic study (higher magnification of Figure 3). The center of the abscess is composed of degenerate neutrophils and cellular debris and is surrounded by large, activated macrophages, lymphocytes, and fibrous connective tissue.
    Image of inflammation in the tongue from a male Swiss CD-1 mouse in a chronic study
    Tongue - Inflammation, Suppurative in a male Swiss CD-1 mouse from a chronic study. There is a large, abscess in the tongue.
    Image of inflammation in the tongue from a male Swiss CD-1 mouse in a chronic study
    Tongue - Inflammation, Suppurative in a male Swiss CD-1 mouse from a chronic study (higher magnification of Figure 5). The center of the abscess is composed of degenerate neutrophils and cellular debris and contains a fragment of foreign material (arrow).
    Image of inflammation in the tongue from a female F344/N rat in a chronic study
    Tongue - Inflammation, Granulomatous in a female F344/N rat from a chronic study. There is a large, subepithelial area of inflammation.
    Image of inflammation in the tongue from a female F344/N rat in a chronic study
    Tongue - Inflammation, Granulomatous in a female F344/N rat from a chronic study (higher magnification of Figure 7). The majority of the inflammatory cells are large, epithelioid macrophages, with fewer lymphocytes and neutrophils.
    Image of inflammation in the tongue from a male Swiss CD-1 mouse in a chronic study
    Tongue - Inflammation, Granulomatous in a male Swiss CD-1 mouse from a chronic study. There is a subepithelial focus of inflammation in the tongue.
    Image of inflammation in the tongue from a male Swiss CD-1 mouse in a chronic study
    Tongue - Inflammation, Granulomatous in a male Swiss CD-1 mouse from a chronic study (higher magnification of Figure 9). The center of the inflammatory focus is composed of epithelioid macrophages with fewer neutrophils and lymphocytes and contains a hair shaft (arrow).