Paramecium (IMAGE) University of Konstanz Caption Paramecium without symbiont (left) and Paramecium after taking in a symbiont (right). Credit Research team Professor Lutz Becks 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.