Electron microscopy image of a blood cell (IMAGE) The Francis Crick Institute Caption Electron microscopy image of a blood cell Credit Hector Huerga Encabo, the Francis Crick Institute Usage Restrictions Use only with this story and with 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.