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.
coop (koÍop) n. 1.  A small enclosure or cage, as for poultry or small animals. 2. A cramped or uncomfortably confined space. 3. Slang A jail or prison. tr.v. cooped, coopÂ·ing, coops 1. To confine or keep (poultry, for example) in a coop. 2. To confine in a small or cramped space.