STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Foetal skin. Coloured scanning electron micrograph (SEM) of skin on the scalp of a human foetus. This skin is not yet keratinised and is covered in microvilli (hair-like). Active absorption may still take place through the skin of the foetus in utero. Magnification: x3300, when printed 10 centimetres wide.
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