Stem cell division (IMAGE) University of Oregon Caption Imagery captured with spinning-disk confocal microscopy at the University of Oregon shows division of a Drosophila neural stem cell, the large cell shown in the center. Smaller progeny from previous cell divisions surrounds it. The mechanical cycle can be seen. Upward and downward movements of the stem cell and surrounding cell membranes occur immediately before division occurs. Credit University of Oregon Usage Restrictions Use credit 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.