Researchers do not know exactly what causes prostate cancer. But they have found some risk factors and are trying to learn just how these factors cause prostate cells to become cancer. On a basic level, prostate cancer is caused by changes in the DNA of a normal prostate cell. DNA is the chemical in our cells that makes up our genes. Our genes control how our cells function.
Barn definition, a building for storing hay, grain, etc., and often for housing livestock. See more.
barn. n. 1. A large farm building used for storing farm products and sheltering livestock. 2.A large shed for the housing of vehicles, such as railroad cars. 3. A particularly large, typically bare building: lived in a barn of a country house. 4. Abbr.oun. 1. barn-an outlying farm building for storing grain or animal feed and housing farm animals. byre, cow barn, cowbarn, cowhouse, cowshed-a barn for cows. farm building-a building on a farm.