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    Image of atrophy in the nose, nerve from a female F344/N rat in a subchronic study
    Nose, Nerve - Atrophy in a female F344/N rat from a subchronic study. The olfactory nerves in the lamina propria are small and decreased in number (arrows), and there is loss of cells in the olfactory epithelium.
    Image of atrophy in the nose from a female F344/N rat in a subchronic study
    Nose, Nerve - Atrophy in a female F344/N rat from a subchronic study (higher magnification of Figure 1). The olfactory nerves in the lamina propria are decreased in size and number (arrows), and there is loss of cells in the olfactory epithelium.
    Image of atrophy in the nose from a male B6C3F1/N mouse in a chronic study
    Nose, Nerve - Atrophy in a male B6C3F1/N mouse from a chronic study. No olfactory nerves remain in the lamina propria.
    Image of normal in the nose from a male B6C3F1/N mouse in a chronic study
    Nose, Nerve - Normal in a female B6C3F1/N mouse from a chronic study. Normal size and number of olfactory nerves are shown for comparison with Figure 3.