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.
Because of this property, melanin is thought to protect skin cells from UVB radiation damage, reducing the risk of cancer, and it's considered that exposure to UV radiation is associated with increased risk of malignant melanoma, a cancer of melanocytes (melanin cells).