MICHAEL ROSS / SCIENCE PHOTO LIBRARY MICHAEL ROSS / SCIENCE PHOTO LIBRARY
Light micrograph at 700x magnification of the interior lobe of a human pituitary gland, an endocrine gland at the base of a vertebrate brain, showing a region that contains fewer acidophils (red), cells that stain easily with acid dyes, than basophils (purple), cells that stain easily with basic dyes. This region also contains a large number of chromophobes (pale blue), cells that do not stain easily.
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