Sleeping Sickness Parasites in Blood (VIDEO) Rockefeller University This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption In experiments, researchers tracked the continually changing protein coats that hide the sleeping sickness parasites from the immune system. Their results reveal an unexpected diversity in disguises present at any one time and challenge the conventional understanding of the dynamics that allow the parasite to persist. Above, parasites wriggle among red blood cells during an early stage infection in a mouse. Credit Monica Mugnier/The Laboratory of Lymphocyte Biology/Rockefeller University Usage Restrictions This video may be used only to illustrate research described in the accompanying story. 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.