DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
African clawed toad skin. Light micrograph of a section through skin from an African clawed toad skin (Xenopus sp.). The skin contains numerous mucous-secreting glands that provide the skin with a protective surface and keeps it moist. Each gland is flask-shaped and lined by cubical or columnar glandular cells that open to the surface. Magnification: x13 when printed 10 centimetres wide.
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