Roundworm (image) Salk Institute Caption Artistic rendering of C. elegans telomeres. Unlike mammals, the tiny roundworm protects the tips of its chromosomes with two different motifs. Credit Courtesy of Dr. Jan Karlseder, Salk Institute for Biological Studies Usage Restrictions News media reproduction to illustrate this story permitted with proper attribution as provided above. For one time use only. 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.