CLOUDS HILL IMAGING LTD / SCIENCE PHOTO LIBRARY CLOUDS HILL IMAGING LTD / SCIENCE PHOTO LIBRARY
Fingerprint. Coloured scanning electron micrograph (SEM) of a cast of a human fingerprint. A fingerprint is formed by epidermal ridges, creating a distinct pattern. Each pattern is unique to an individual, even for identical twins. On the skin's surface tiny pores can be seen, which are the openings of sweat glands.
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