Here's what I found a while back when seeking info about tumor necrosis. 1) Necrosis in the tumor means that the cancer cells in that area are dead. The pathologic finding of necrosis suggests a fast-growing cancer. This often happens because the tumor runs out of blood supply in the central portion. Without a blood supply, the tumor cells cannot live.
In association football, where the shoes themselves are known as football boots, there are three different cleat types. There are soft ground cleats which are made for wet weather. The soft ground cleats are always replaceable, and are almost always metal, so when they wear down they are easy to replace.
Outdoor shoes (Cleats) 3. Turf shoes. Every soccer shoe is built from three components (so is any shoe...I guess): Upper - top part of the shoe. Midsole - inside part of the shoe. Outsole - bottom part of the shoe. Upper and midsole are the same for all types (pictures below).