Examining the Children (IMAGE) University of Copenhagen - Faculty of Science Caption Doctors at local health centers used ultrasound to examine the children's thymus, an organ that is important for the immune system. Credit Kim Fleischer Michaelsen 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.