Polymorphic Nuclear Leukocytes (IMAGE) University of Würzburg Caption These are polymorphic nuclear leukocytes infected with Chlamydia (blue). Credit Karthika Rajeeve 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.