Susan Bailey, Colorado State University (IMAGE) Colorado State University Caption Colorado State University Professor Susan Bailey studies telomeres, or the protective 'caps' on the ends of chromosomes. Telomeres typically shorten as a person ages. Credit John Eisele/Colorado State University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.