Skin section. Coloured scanning electron micrograph (SEM) of a section through human skin. The top layer of the epidermis is the stratum corneum (cornified layer, light brown). It is comprised of dead, keratinised flattened skin cells, which are continuously sloughed off and replaced with new cells from below. The living layer of the epidermis (dark brown) is called the Malpighian layer. This layer contains cells called melanocytes, which produce the pigment melanin. Below this is the dermis (pink) which contains blood vessels, hair follicles and sweat glands. Magnification: x700 when printed 10 centimetres tall.
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