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.
Artificial Grass (AG) Created for artificial or hard natural surfaces like artificial turf or solid, sun-baked ground. Hard ground soccer cleats generally have a large number of short studs that are usually evenly distributed across the entire outsole. Indoor (IN) These were created for playing indoor soccer or futsal in a gym or rec facility, but will also work for leisure and street wear.