MICHAEL ROSS / SCIENCE PHOTO LIBRARY MICHAEL ROSS / SCIENCE PHOTO LIBRARY
Light micrograph at 350x magnification of a human Foetal adrenal gland, a type of endocrine gland, showing the capsule and the underlying permanent cortex, the outer layer of the organ (H&E stain). The cells of the permanent cortex are arranged in arched groups that extend into short cords. Below the permanent cortex is the Foetal zone, in which cells are larger than those of the permanent cortex.
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