Telomeres (IMAGE) Johns Hopkins Medicine Caption Telomeres glow at the end of chromosomes. Credit Credit: Hesed Padilla-Nash and Thomas Ried of the NIH Usage Restrictions Cite source 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.