Skin cancer is an uncontrolled growth of cells within the skin. There are three main types: basal cell carcinoma,squamous cell carcinoma, and melanoma. Some skin cancers can spread to other locations in the body and can be fatal, as seen with singer-songwriter Bob Marley, who died shortly after being diagnosed with melanoma. The skin is divided into three layers--the epidermis, dermis, and hypodermis. The hypodermis is made of fat and connective tissue that anchors the skin to the underlying muscle. Just above is the dermis, which contains hair follicles, nerves and blood vessels. And just above that, the outermost layer of skin, is the epidermis. The epidermis itself has multiple cell layers that are mostly keratin ocytes - which are named for the keratin protein that they’refilled with. Keratin is a strong, fibrous protein that allows keratinocytes to protect themselves from getting destroyed, when you rub your hands through the sand at the beach. Keratinocytes start their life at
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