6/28/2010 PERMALINK
Scientists are first to measure telomeres, the chromosome caps that prevent aging. University of Warwick and University Hospitals Coventry : Scientists are the first to directly measure a specific region of DNA in human embryos that could be a quality marker for embryonic development. Researchers at the have measured telomeres, regions of repetitive DNA at the ends of a chromosome which protect it from deterioration. Telomeres shorten each time a cell divides and when telomere length becomes critically short, the cells die."