LJI Instructor Julie Burel, Ph.D. (IMAGE) La Jolla Institute for Immunology Caption Dr. Julie Burel’s work, in collaboration with the LJI Flow Cytometry Core, has shown that some doublets do have a role in the body—they may even be a sign that the immune system is fighting an infection. Credit La Jolla Institute for Immunology Usage Restrictions May be used with permission License Original 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.