Somewhat more formally, for a set Ï of properties and relations, a Ï-representation of some structure X is a structure Y that is the image of X under a s homomorphism that preserves Ï. The label representation is sometimes also applied to the homomorphism itself.
Melanoma. This cancer begins in the melanocytes, the cells that provide the skinâs color. Melanoma is one of the deadliest forms of skin cancer because it can spread rapidly inside the body. Approximately one American dies from melanoma every hour.
Melanoma is a type of skin cancer, the other main types being basal cell carcinoma and squamous cell carcinoma. Melanoma is the most aggressive of the skin cancers. Melanoma is a cancer of skin cells called melanocytes, which produce the pigment in moles, freckles and tanned skin. Melanomas can occur anywhere on the skin, but are most common on the chest and back in men, and the legs in women. The head and neck are other common sites.