A microscopic image of posterior pituitary gland tissue stained with hematoxylin and eosin (H&E). The image shows a dense network of nerve fibers and glial cells called pituicytes. The fibers appear elongated and lightly stained in pink shades, while the nuclei of the pituicytes are stained in darker purple shades. Occasional red blood cells can be seen scattered within the tissue.

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