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Sweat pore. Coloured scanning electron micrograph (SEM) of sweat (lower right) produced by a sweat pore on skin from a human hand. Sweat is released onto the surface of the skin from glands below the surface. The sweat evaporates, and this cools the body by carrying away heat. The surrounding area shows the dead cells making up the surface layer of the skin, the stratum corneum. Magnification: x500 when printed 10cm wide.
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