Centriole Numbers Drop After Centriole Duplication Is Halted (image) Johns Hopkins Medicine Share Print E-Mail Caption After cells are treated with auxin to prevent centriole duplication, the number of centrioles (green dots) per cell is halved with each cell division. The number of days of auxin treatment is shown at left. DNA shown in blue. Credit Journal of Cell Biology Usage Restrictions None Share Print E-Mail 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.