Model of the Study (IMAGE) Hokkaido University Caption The number of microtubules (green) increases proportionally to ploidy level, altering efficiency of centrosome duplication. Credit Yaguchi K., et al., Journal of Cell Biology, April 30, 2018 Usage Restrictions This image is copyrighted and can be used for reporting this press release if properly credited. 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.