DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY. DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY.
False colour scanning electron micrograph of human skin from a blister on the palm of the hand (male). The skin on the palm is neatly arranged in ridges (not seen) with sweat pores (seen) appearing as miniature depressions tunnelling into the ridge- peaks. The external surface of skin, the epidermis, consists of keratinised, flattened layers of cells. Keratinization occurs when deposits of the fibrous protein keratin are layed down in the cells, causing them to toughen. This outer layer of cells is shed continuously (flaky) & is replaced by progressive movement & maturation of cells from the skin beneath. Magnification: X71 at 35mm size. Original is BW print P710/152.
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