Mitotic Spindle Hub (IMAGE) McGill University Caption This image shows a mitotic spindle hub (the orange and grey hub-and-spoke structure) primed by Cdk-Clb3 signaling (red). Credit Conrad Hall, McGill 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.