Skin surface. Coloured scanning electron micrograph (SEM) of vapour entrapments/sweat globules on the surface of human skin. The outermost surface is composed of dead and dying skin cells from the underlying epidermis, which help to protect the delicate epidermal cells from the external environment. Magnification: x51 when printed at 10 centimetres wide Image width is 1.99 mm.
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