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.
Top definition. Barn Sour. a person or horse refuses to go anywhere outside of what it considers to be its home. It also means that the person/horse is maybe scared of the outside world. He would never go out with his wife because he is barn sour. #barnsour#doesnt want to leave the house#antisocial#scared to go out#afraid.