Professor Dr Armin Hallmann (IMAGE) Bielefeld University Caption Professor Dr Armin Hallmann from Bielefeld University led the research on mitosis in the microalga Volvox carteri. Credit Photo: Bielefeld University/S. Jonek Usage Restrictions The image may only be used with appropriate caption and credit. 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.