Mitosis (IMAGE) Cold Spring Harbor Laboratory Caption Classical stages of mitosis are depicted in the two-cell embryos of the nemertean worm Cerebratulus, with microtubules in gold and DNA in blue. Credit Images and composition kindly provided by George von Dassow, Oregon Institute of Marine Biology. 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.