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Skin Cancer

Skin Cancer Defined

The skin is the body's largest organ. It has two main layers: the inner layer, called the dermis, and the outer layer, called the epidermis. The dermis contains sweat glands, nerves, hair follicles, and blood vessels. The epidermis forms the protective, waterproof layer of the skin. The very top of the epidermis, which is called the stratum corneum, is made up of dead cells that have moved their way up through the other layers.