Tardigrade (IMAGE) University of Edinburgh Caption Tardigrades have not acquired a significant proportion of their DNA from other organisms, a new study shows. Credit Aziz Aboobaker and Mark Blaxter 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.