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.
Skin cancer (melanoma) Melanoma is a type of skin cancer that can spread to other organs in the body. Signs and symptoms of melanoma. The most common sign of melanoma is the appearance of a new mole or a change in an existing mole. This can occur anywhere on the body, but the most commonly affected areas are the back in men and the legs in women.