Sulfolobus (IMAGE) Indiana University Caption An image of Sulfolobus, a genus of archaea that prefers high temperatures. Each cell is outlined in red. The DNA is stained blue. Credit Image courtesy Stephen Bell, Indiana University. Usage Restrictions Credit image as courtesy Stephen Bell, Indiana University. 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.