J.C. REVY, ISM / SCIENCE PHOTO LIBRARY J.C. REVY, ISM / SCIENCE PHOTO LIBRARY
Human skin. Light micrograph of a section through normal, healthy human skin. The outer layer (red) is the epidermis, a protective layer made of flattened horny keratin-producing cells (known as keratinocytes). The inner layer (pink) is the dermis, also known as the true skin. The epidermis varies from a germinal layer of cells bordering the dermis, where cell division takes place; to a tough fibrous layer of dead cells (the corneal layer) on the outside. The dermis is composed of loose connective tissue containing blood & lymph vessels, nerve fibres, sweat glands and hair follicles. Haematoxylin and Eosin stained cells. Magnification: x312 at 35mm size.
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