Plague Ingestion by Amoebae (IMAGE) Colorado State University Caption These are fluorescent confocal images of amoebae after experimental co-culture with Yersinia pestis. Credit David Markman/Colorado State University 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.