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    Image of inflammation in the lymph node from a male F344/N rat in a chronic study
    Lymph node - Inflammation, Suppurative in a male F344/N rat from a chronic study. Lymph node is focally expanded by a suppurative exudate.
    Image of inflammation in the lymph node from a male F344/N rat in a chronic study
    Lymph node - Inflammation, Suppurative in a male F344/N rat from a chronic study (higher magnification of Figure 1). The suppurative exudate consists of degenerate neutrophils (arrows), cell debris, proteinaceous fluid, and fibrin.
    Image of inflammation in the lymph node from a female F344/N rat in a chronic study
    Lymph node - Inflammation, Granulomatous in a female F344/N rat from a chronic study. The lymph node is infiltrated by sheets and aggregates of large, activated macrophages (arrow).
    Image of inflammation in the lymph node from a female F344/N rat in a chronic study
    Lymph node - Inflammation, Granulomatous in a female F344/N rat from a chronic study (higher magnification of Figure 3). Multiple aggregates of macrophages (arrows) are admixed with mature lymphocytes.