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 cancer that usually starts in a certain type of skin cell. The 3 main types of cells in the top layer of the skin (called the epidermis) are: Squamous cells: These are flat cells in the outer part of the epidermis that are constantly shed as new ones form.