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.
Old Trafford is this size, with other pitches' size a slight variation (Stamford Bridge, Santiago Bernabeu, La Bombonera) A football pitch (also known as a football field or soccer field) is the playing surface for the game of association football. Made of turf (grass) or artificial turf, its dimensions and markings are defined by Law 1 of the Laws of the Game, The Field of Play. All line markings on the pitch form part of the area which they define.