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.
The word barn comes from the Old English bere, for barley (or grain in general), and aern, for a storage placeâthus, a storehouse for barley. âAnother word for 'barn' in Old English was beretun, barley enclosure (from tun: 'enclosure,' 'house', or beretun (barton), also meaning a threshing floor. In historical times, the barn was to be distinguished from the granary, which was used to store threshed grain or cut off ears.